Internal Dandelion and stuff Wiki - User contributions [en]

Our team

2025-09-28T06:40:03Z

Techit: /* Techit */ link Techit to user page

Welcome to a directory for dailitation.xyz team.

== [[User:Diskette|Diskette Guy the Administrator]] ==
This person is responsible for this project's (dailitation.xyz) initiation. They do most of the works, administration, and financing.

=== Administration ===
They do physical hardware administration, including but not limited to, networking and hardware installation.

On the software side, they do software configurations with GNU/Linux.

== [[User:Techit|Techit]] ==
Techit, or TechitWinner is responsible for breaking whatever Diskette have made. (temporary)

== LinesOfCodes ==
LinesOfCodes, or referred to as GameCreator on Discord, is responsible for doing whatever reasonable things Diskette assigned to her.

She is also responsible for making too many web applications and maintaining them.

Our team

2025-09-10T07:18:37Z

Techit: Add techit

Welcome to a directory for dailitation.xyz team.

== [[User:Diskette|Diskette Guy the Administrator]] ==
This person is responsible for this project's (dailitation.xyz) initiation. They do most of the works, administration, and financing.

=== Administration ===
They do physical hardware administration, including but not limited to, networking and hardware installation.

On the software side, they do software configurations with GNU/Linux.

== Techit ==
Techit, or TechitWinner is responsible for breaking whatever Diskette have made. (temporary)

== LinesOfCodes ==
LinesOfCodes, or referred to as GameCreator on Discord, is responsible for doing whatever reasonable things Diskette assigned to her.

She is also responsible for making too many web applications and maintaining them.

User:Techit/Knowledge dump

2025-07-09T11:39:08Z

Techit: add more example of statement

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer numbers]]
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

=== [[wikipedia:Mathematical_logic|Mathematical logic]] ===
Mathematical logic is ตรรกศาสตร์ in Thai; ok? In this topic we will see more symbol to remember (more migraines).

==== Statement ====
A statement is not your bank statements but an anything that can only be true or false (or boolean; for computer nerd). These are the example of a statement:

# 1 is a prime number. (false)
# 2 is a prime number. (true)
# Mushroom is a fungi (true)

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Conversion =====
This is very important, you need to know. Say you want to convert <math>3.56 * 10^{15}\ ng</math> (nano gram) to <math>kg</math> (kilo gram); what you need to do is you convert to the <math>ng</math> to <math>g</math> first. Take a look at the SI prefixes table below, multiply <math>3.56*10^{15}</math> with the exponent of that converting prefix; "nano" here. <math>3.56*10^{15}*10^{-9}</math>, boom you got <math>3.56*10^{6}\ g</math>.

Next convert <math>g</math> to <math>kg</math> by dividing <math>3.56*10^{6}\ g</math> by <math>10^{3}</math> (kilo), you got <math>\frac{3.56*10^{6}}{10^{3}}</math>. Then you must invert the <math>10^{3}</math> to <math>10^{-3}</math> and from dividing to multiplying so you got <math>3.56*10^{6} * 10^{-3}</math>, and the final answer will be <math>3.56*10^{3}\ kg</math>.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

== Biology ==
I do not understand much on this field of study, but I'll try to dump it as much as possible...

==== Atoms, molecules and compounds ====
I have no idea.

User:Techit/common.css

2025-07-09T11:27:26Z

Techit: add a rule to disable math's stupid syntax preview

math span.ve-ce-focusableNode-invisibleIcon.oo-ui-widget.oo-ui-widget-enabled.oo-ui-buttonElement.oo-ui-buttonElement-frameless.oo-ui-iconElement.oo-ui-buttonWidget.oo-ui-labelElement {
display: none !important;
pointer-events: none;
}

User:Techit/Knowledge dump

2025-07-09T11:17:37Z

Techit: added mathematical logic to math field

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer numbers]]
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

=== [[wikipedia:Mathematical_logic|Mathematical logic]] ===
Mathematical logic is ตรรกศาสตร์ in Thai; ok? In this topic we will see more symbol to remember (more migraines).

==== Statement ====
A statement is not your bank statements but an anything that can only be true or false (or boolean; for computer nerd)

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Conversion =====
This is very important, you need to know. Say you want to convert <math>3.56 * 10^{15}\ ng</math> (nano gram) to <math>kg</math> (kilo gram); what you need to do is you convert to the <math>ng</math> to <math>g</math> first. Take a look at the SI prefixes table below, multiply <math>3.56*10^{15}</math> with the exponent of that converting prefix; "nano" here. <math>3.56*10^{15}*10^{-9}</math>, boom you got <math>3.56*10^{6}\ g</math>.

Next convert <math>g</math> to <math>kg</math> by dividing <math>3.56*10^{6}\ g</math> by <math>10^{3}</math> (kilo), you got <math>\frac{3.56*10^{6}}{10^{3}}</math>. Then you must invert the <math>10^{3}</math> to <math>10^{-3}</math> and from dividing to multiplying so you got <math>3.56*10^{6} * 10^{-3}</math>, and the final answer will be <math>3.56*10^{3}\ kg</math>.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

== Biology ==
I do not understand much on this field of study, but I'll try to dump it as much as possible...

==== Atoms, molecules and compounds ====
I have no idea.

User:Techit/Knowledge dump

2025-06-26T12:43:05Z

Techit: /* Conversion */ fix spacing

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer numbers]]
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Conversion =====
This is very important, you need to know. Say you want to convert <math>3.56 * 10^{15}\ ng</math> (nano gram) to <math>kg</math> (kilo gram); what you need to do is you convert to the <math>ng</math> to <math>g</math> first. Take a look at the SI prefixes table below, multiply <math>3.56*10^{15}</math> with the exponent of that converting prefix; "nano" here. <math>3.56*10^{15}*10^{-9}</math>, boom you got <math>3.56*10^{6}\ g</math>.

Next convert <math>g</math> to <math>kg</math> by dividing <math>3.56*10^{6}\ g</math> by <math>10^{3}</math> (kilo), you got <math>\frac{3.56*10^{6}}{10^{3}}</math>. Then you must invert the <math>10^{3}</math> to <math>10^{-3}</math> and from dividing to multiplying so you got <math>3.56*10^{6} * 10^{-3}</math>, and the final answer will be <math>3.56*10^{3}\ kg</math>.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

== Biology ==
I do not understand much on this field of study, but I'll try to dump it as much as possible...

==== Atoms, molecules and compounds ====
I have no idea.

User:Techit/Knowledge dump

2025-06-26T12:42:14Z

Techit: /* Scientific notation */

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer numbers]]
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Conversion =====
This is very important, you need to know. Say you want to convert <math>3.56 * 10^{15}\ ng</math> (nano gram) to <math>kg</math> (kilo gram); what you need to do is you convert to the <math>ng</math> to <math>g</math> first. Take a look at the SI prefixes table below, multiply <math>3.56*10^{15}</math> with the exponent of that converting prefix; "nano" here. <math>3.56*10^{15}*10^{-9}</math>, boom you got <math>3.56*10^{6}\ g</math>. Next convert <math>g</math> to <math>kg</math> by dividing <math>3.56*10^{6}\ g</math> by <math>10^{3}</math> (kilo), you got <math>\frac{3.56*10^{6}}{10^{3}}</math>. Then you must invert the <math>10^{3}</math> to <math>10^{-3}</math> and from dividing to multiplying so you got <math>3.56*10^{6} * 10^{-3}</math>, and the final answer will be <math>3.56*10^{3}\ kg</math>.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

== Biology ==
I do not understand much on this field of study, but I'll try to dump it as much as possible...

==== Atoms, molecules and compounds ====
I have no idea.

User:Techit/Knowledge dump

2025-06-26T12:24:42Z

Techit: added biology

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer numbers]]
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

== Biology ==
I do not understand much on this field of study, but I'll try to dump it as much as possible...

==== Atoms, molecules and compounds ====
I have no idea.

User:Techit/Knowledge dump

2025-06-26T10:51:28Z

Techit: added math more set operation, added physics metric prefixes

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==
Mathematics is the study field I hated the most, even though I chose to study in Sci-Math program. Anyways just let's get into the point.

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = <math>A=\{1,2,3,4,5,6,7,8,9\}</math> or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

==== Elements / Members ====
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in). So let's see some examples below.

# <math>A=\{x|x\in \mathbb{I}^{+}, -5<x\leq12 \}</math>
# <math>B=\{x|x\in \mathbb{P}, -5\leq x \leq 23\}</math>

To translate set notation to normal human-being data set we look at <math>\in</math>then use our brain to analyze, after that A should be {x which x in <math>I^{+}</math> (positive integer), x greater than -5 but less or equals to 12}, which in conclusion to be <math>A=\{1,2,3,4,5,6,7,8,9,10,11,12\}</math>.

Additional info: you might see these stupid blackboard letters e.g. <math>\mathbb{R}, \mathbb{Q}, \mathbb{I}, \mathbb{P}</math>, these can be denotes to...

* <math>\mathbb{R}</math> = [[wikipedia:Real_number|real numbers]]
* <math>\mathbb{R}^{+}</math> = positive real numbers
* <math>\mathbb{R}^{-}</math> = negative real numbers
* <math>\mathbb{Q}</math> = [[wikipedia:Rational_number|rational numbers]]
* <math>\mathbb{Q}^{+}</math> = positive rational numbers
* <math>\mathbb{Q}^{-}</math> = negative rational numbers
* <math>\mathbb{I}</math> = [[wikipedia:Integer_number|integer]] numbers
* <math>\mathbb{I}^{+}</math> = positive integer numbers
* <math>\mathbb{I}^{-}</math> = negative integer numbers
* <math>\mathbb{N}</math> = [[wikipedia:Natural_number|natural numbers]]
* <math>\mathbb{P}</math> = [[wikipedia:Prime_number|prime numbers]]

==== Venn diagram ====
Venn diagram is a way to draw set, usually to visualize set operations (usually union, intersection and complement) however it's a pain in ass to draw so I will not talk much about this thing. But for now let's get to know "universe" (<math>\mathbb{U}</math>; can be written as U, '''U''', 𝓤, Ｕ or whatever the hell you would like) or data range or whatever the heck it's called but in Thai it's called เอกภพสัมพัทธ์.

==== Subset ====
Subset is what I hated the most in this topic so let's get fast. So you have <math>A=\{1,2,3\}</math> the A's subset would be <math>\{\}, \{1\}, \{2\}, \{3\}, \{1,2\}, \{1,3\}, \{2,3\}, \{1,2,3\}</math>, if you don't see the pattern, this is the pattern <math>\{\}, \dots, A</math> where <math>\dots</math> is combination of every member from 1 member {1} to 2 {1,2} to 3 {1,2,3} members to <math>\text{n}</math> members. The total subset amount will be <math>n(A)*2</math>. In this example <math>n(A)</math> is 3 so we will have a total subset of 6.

Here's what you might need to know more about subset;

# {} is called "empty set" or "null" in computer nerd language
# <math>\text{Ø}</math> can be used to represent empty set too
# <math>A \subseteq B \iff \forall x\,(x \in A \Rightarrow x \in B)</math> - A is a subset of B if every element of A is also an element of B
# <math>A \subset B \iff (A \subseteq B, A \ne B)</math> - A is a proper subset only if A is subset of B and A is not equals to B
#

==== Power set ====
Power set is related to subset; it's just a set of all subset in that set. Let's bring <math>A=\{1,2,3\}</math> guess what is <math>P(A)</math>? Yes. <math>P(A)=\{\text{Ø},\{1\},\{2\},\{3\},\{1,2\},\{1,3\},\{2,3\},\{1,2,3\}\}</math>

==== Basic set operations ====

===== [[wikipedia:Set_intersectionhttps://en.wikipedia.org/wiki/Set_intersection|Intersection]] =====
The intersection of two sets <math>A</math>⁠⁠ and <math>B</math> ⁠⁠ is a set denoted ⁠⁠<math>A \cap B</math> whose elements are those elements that belong to both <math>A</math>⁠⁠ and ⁠⁠<math>B</math>. That is,<math>{\displaystyle A\cap B=\{x|x\in A\land x\in B\},}</math> where <math>\land</math> denotes [[wikipedia:Logical_and|logical and]].

===== [[wikipedia:Union_(set_theory)|Union]] =====
The union of two sets <math>A</math>⁠⁠ and <math>B</math> is a set of elements which are in <math>A</math>, in <math>B</math>, or in the both <math>A</math> and <math>B</math>.

Imagine <math>A=\{1,3,5,7,9,10\}</math> and <math>B=\{2,4,5,6,8,10\}</math> then <math>A\cup B = \{1,2,3,4,5,6,7,8,9,10\}</math>

===== [[wikipedia:Complement_(set_theory)|Complement]] =====
The complement of <math>A</math> is to everything but <math>A</math>.

Imagine <math>\mathbb{U}=\{1,2,\dots,9\}</math> and <math>A=\{1,3,5,7\}</math> and <math>B=\{2,4,5,6\}</math> then <math>A' = \{2,4,6,8,9\}</math>.

== Physics ==
This field of study happen to be exist because an apple fell onto Isaac's head.

==== Scientific notation ====
This is nothing much, just some number shorteners.

===== Metric prefix =====
We use this to write instead of long numbers e.g. <math>1,000,000\ \text{bytes}= 1 * 10^{6}\ \text{bytes}\ =\ 1\ \text{mega bytes}</math>. We use [[wikipedia:International_System_of_Units#Prefixes|International System of Units]]
{| class="wikitable"
|+SI prefixes
!Prefix
!Initial
!Decimal
!Exponent Form
|-
|Exa
|E
|1,000,000,000,000,000,000
|<math>10^{18}</math>
|-
|Peta
|P
|1,000,000,000,000,000
|<math>10^{15}</math>
|-
|Tera
|T
|1,000,000,000,000
|<math>10^{12}</math>
|-
|Giga
|G
|1,000,000,000
|<math>10^{9}</math>
|-
|Mega
|M
|1,000,000
|<math>10^{6}</math>
|-
|Kilo
|k
|1,000
|<math>10^{3}</math>
|-
|Hecto
|h
|100
|<math>10^{2}</math>
|-
|Deca
|da
|10
|<math>10^{1}</math>
|-
| -
| -
|1
|<math>10^{0}</math>
|-
|Deci
|d
|0.1
|<math>10^{-1}</math>
|-
|Centi
|c
|0.01
|<math>10^{-2}</math>
|-
|Milli
|m
|0.001
|<math>10^{-3}</math>
|-
|Micro
|μ
|0.0000001
|<math>10^{-6}</math>
|-
|Nano
|n
|0.000000001
|<math>10^{-9}</math>
|-
|Pico
|p
|0.00000000001
|<math>10^{-12}</math>
|-
|Femto
|f
|0.0000000000001
|<math>10^{-15}</math>
|-
|Atto
|a
|0.00000000000001
|<math>10^{-18}</math>
|}

User:Techit/Web

2025-06-26T10:07:24Z

Techit: add notice

<s>hi this is for https://gitlab.com/techit.win/techit/web thanks</s>

Welcome to User:Techit/Web, this page is for Techit's personal website wiki. Which right now is just a plain HTML/CSS website with no javascript and I am not planning to use it. So without functionality, this page is just useless. Thank you visiting...

current category:

* [[User:Techit/Web/Components|Components]] - Nuxt web components wiki

User:Techit

2025-06-26T10:05:09Z

Techit: chanfge web

Techit Thawiang (Sumo; born Darunbhop Thawiang) is an ordinary 15 years old who likes to develop software for his own need. He dreams to be a software engineer and an entrepreneur.

Now I have my own subpages in this wiki which is
* [[User:Techit/Web]]
* [[User:Techit/Knowledge_dump]]

User:Techit

2025-06-25T23:57:41Z

Techit: Add knowledge dump to wiki page list

User:Techit/Knowledge dump

2025-06-25T13:49:37Z

Techit: change Q+ and Q- from real to rational (thanks to Diskette)

User:Techit/Knowledge dump

2025-06-25T13:46:41Z

Techit: added basic set operations (not finished)

User:Techit/Knowledge dump

2025-06-25T13:18:58Z

Techit: Added set, subset and power set

User:Techit/Knowledge dump

2025-06-25T12:06:19Z

Techit: Removed TOC

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

== Mathematics ==

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = {1,2,3,4,5,6,7,8,9} or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

====== Elements / Members ======
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in) or <math>\not\in</math>(not in). Let's see some examples below.

<math>A=\{x|x\in I^{+}, -5<x\leq12 \}</math> or <math>B=\{x|x\in P, -5\leq x \leq 23\}</math>

User:Techit/Knowledge dump

2025-06-25T12:06:02Z

Techit: asdasds

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

Here's the table of contents

== Mathematics ==

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = {1,2,3,4,5,6,7,8,9} or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

====== Elements / Members ======
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in) or <math>\not\in</math>(not in). Let's see some examples below.

<math>A=\{x|x\in I^{+}, -5<x\leq12 \}</math> or <math>B=\{x|x\in P, -5\leq x \leq 23\}</math>

User:Techit/Knowledge dump

2025-06-25T12:04:04Z

Techit: try to fix TOC

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

Here's the table of contents

<nowiki>__TOC__</nowiki>

== Mathematics ==

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = {1,2,3,4,5,6,7,8,9} or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

====== Elements / Members ======
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in) or <math>\not\in</math>(not in). Let's see some examples below.

<math>A=\{x|x\in I^{+}, -5<x\leq12 \}</math> or <math>B=\{x|x\in P, -5\leq x \leq 23\}</math>

User:Techit/Knowledge dump

2025-06-25T12:03:46Z

Techit: add basic hierarchy to user's knowledge dump page

Hello, welcome to Techit's knowledge dump page. Here I will dump as many knowledge as possible for collection in the future use.

Here's the table of contents

<code><nowiki>__TOC__</nowiki></code>

== Mathematics ==

=== [[wikipedia:Set_(mathematics)|Set]] ===
Imagine a [[wikipedia:Array_(data_structure)|data array]], it's a set. Set is a collection of different stuff. For example A = {1,2,3,4,5,6,7,8,9} or <math>\text{Slave}=\{\text{Diskette},\text{GameCreator}\}</math>.

====== Elements / Members ======
A stuff in a data set is called "element" or "member", so to write a set notation we use <math>\in</math>(in) or <math>\not\in</math>(not in). Let's see some examples below.

<math>A=\{x|x\in I^{+}, -5<x\leq12 \}</math> or <math>B=\{x|x\in P, -5\leq x \leq 23\}</math>

Copperplate

2025-06-20T11:34:39Z

Techit: change layout

'''Copperplate''' was a physical server hosted at [[User:Techit|Techit]]'s house. It was a low-end performance laptop.

== Why deprecated? ==
Unfortunately, we are no longer able to maintain it, as the hardware is older than Techit and maintenance costs have become unsustainable.

Thetic

2025-06-20T11:28:33Z

Techit: /* Containers */ added drive, photos and techit-db description, fix typo for unixweb description

'''Thetic''' is a general purpose mid-tier performance desktop server.

== Services ==

=== Containers ===
{| class="wikitable"
|+
!Name
!Description
!Notes
|-
|drive
|A Nextcloud instance
|
|-
|garage
|An S3-compatible object storage
|
|-
|internal
|Internal containers for internal thingsmajigs, such as this website
|
|-
|jzbot
|JzBot Discord Application bot
|
|-
|jzcraft-build
|JzCraft internal build server
|
|-
|jzcraftlite
|Temporal JzCraft "lite" server
|
|-
|litestore
|[[User:GameCreator|GameCreator]]'s stuff
|
|-
|photos
|An Immich instance
|Docker image
|-
|postgresql
|E-mail authentication database
|
|-
|techit-db
|[[User:Techit|Techit]]'s stuff
|
|-
|unixdatabase
|Database server for unix.in.th
|
|-
|unixweb
|Web services for unix.in.th
|
|}

== Quirks ==
Unexpected power outage may result in this server waiting for the user to press F1 on their keyboard.

Some storage media might not work as expected.

== History ==
We were essentially looking for a new server to replace or go along with the old [[Server:Original]] server. Fortunately, [[User:Techit]] has a unused not-confirmed working processor that I can use. Unfortunately, that unused not-confirmed working processor does not work and [[User:Diskette]] has already wasted their money on the motherboard and he has to waste even more money for the processor. He decided to go onto the cheapest route and replaces the [[Server:Original]] by gutting its power supply and hard disk drives.

User:Techit/Web/Components

2025-06-02T09:34:00Z

Techit:

thawia.ng's web components wiki

* [[User:Techit/Web/Components/Dropdown|Dropdown]]

User:Techit/Web/Components

2025-06-02T09:33:45Z

Techit:

thawia.ng's web components wiki

* [[Thawia.ng:Web/Components/Dropdown|Dropdown]]

User:Techit/Web

2025-06-01T10:48:50Z

Techit: change compoenets link

hi this is for https://gitlab.com/techit.win/techit/web thanks

current category:

* [[User:Techit/Web/Components|Components]] - Nuxt web components wiki

User:Techit

2025-06-01T10:48:08Z

Techit: i wrote the hyperlink wrong

User:Techit

2025-06-01T10:47:51Z

Techit:

Main Page

2025-06-01T10:46:54Z

Techit: removed thawiang namespace

Welcome to Dandelion 'n' Stuff internal wiki for documenting our internal server behaviors and quirks, the editing feature for this wiki is reserved for our administrators. Those who wants to just look, it is also fine to do so. I mean, sharing knowledge wouldn't hurt, right?

สวัสดีและยินดีต้อนรับสู่วิกิส่วนตัวของแดนดิไลออนและอื่น ๆ เป็นหนังสือเอกสารกำกับและคูมือต่าง ๆ สำหรับผู้ดูแล ใครจะดูก็ดูไปนะ การแบ่งปันความรู้ไม่ผิดกฎหมาย =3=

This wiki is in both English language and Thai languages, whatever suits the person writing the documentation

วิกินี้มีทั้งภาษาไทยและอังกฤษ ใครจะใช้อะไรตามสะดวกก็ใช้

Namespace ณ ปัจจุบัน:

* [[Server:Main Page]]
* [[Docs:Main Page]]
* [[Dialect:Main Page]]

Miscellaneous pages:

* [[To-do list]]

== MediaWiki's default ==
<strong>MediaWiki has been installed.</strong>

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

== Getting started ==
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/postorius/lists/mediawiki-announce.lists.wikimedia.org/ MediaWiki release mailing list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Localisation#Translation_resources Localise MediaWiki for your language]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Combating_spam Learn how to combat spam on your wiki]

User:Techit/Web/Components

2025-06-01T10:46:39Z

Techit: Techit moved page Techit/Web/Components to User:Techit/Web/Components without leaving a redirect

thawia.ng's web components wiki

* [[Thawia.ng:Components/Dropdown|Dropdown]]

User:Techit/Web/Components/Dropdown

2025-06-01T10:46:24Z

Techit: Techit moved page Thawia.ng:Components/Dropdown to User:Techit/Web/Components/Dropdown without leaving a redirect

[[Image:Thawiang-dropdown.png|thumb|195px|thawia.ng web drop-down list or dropdown menu with generic actions]]

'''Dropdown''' is a menu used to display actions or links when clicking on an element.

=== Usage ===
idk you are on your own (jk ill write better one later) but heres the example
<pre>
<template>
<div class="cont">
<section class="wrap">
<div class="h-64"></div>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
</section>
</div>
</template>

<script setup>
const dropdownData = ref([
{
id: 'actions',
label: 'Actions',
items: [
{
id: 'edit',
label: 'Edit',
icon: 'fas fa-edit',
disabled: false
},
{
id: 'copy',
label: 'Copy',
icon: 'fas fa-copy'
},
{
},
{
id: 'delete',
label: 'Delete',
icon: 'fas fa-trash',
disabled: true
}
]
}
])

const hoverDropdowns = ref([
{
id: 'nav-menu',
label: 'Navigation',
hover: true,
items: [
{ id: 'home', label: 'Home' },
{ id: 'about', label: 'About' },
{ id: 'contact', label: 'Contact' }
]
}
])
const handleItemClick = (data) => {
console.log('Item clicked:', data)
if (data.item.id === 'profile') {
navigateTo('/profile')
} else if (data.item.id === 'logout') {
console.log('Logging out...')
}
}

const handleDropdownOpen = (index) => {
console.log('Dropdown opened:', index)
}

const handleDropdownClose = (index) => {
console.log('Dropdown closed:', index)
}

const addDropdownItem = (dropdownIndex, newItem) => {
dropdownData.value[dropdownIndex].items.push(newItem)
}

const removeDropdownItem = (dropdownIndex, itemId) => {
const dropdown = dropdownData.value[dropdownIndex]
dropdown.items = dropdown.items.filter(item => item.id !== itemId)
}
</script>
</pre>

User:Techit/Web/Components

2025-06-01T10:46:07Z

Techit: Techit moved page Thawia.ng:Components to Techit/Web/Components without leaving a redirect

thawia.ng's web components wiki

* [[Thawia.ng:Components/Dropdown|Dropdown]]

User:Techit/Web

2025-06-01T10:45:45Z

Techit: Techit moved page Thawia.ng:Main Page to User:Techit/Web without leaving a redirect

hi this is for https://gitlab.com/techit.win/techit/web thanks

current namespace:

* [[Thawia.ng:Components]] - Nuxt web components wiki

User:Techit/Web/Components/Dropdown

2025-05-31T11:03:57Z

Techit: change example image width

User:Techit/Web/Components/Dropdown

2025-05-31T11:02:58Z

Techit: added example

[[Image:Thawiang-dropdown.png|thumb|135px|thawia.ng web drop-down list or dropdown menu with generic actions]]

'''Dropdown''' is a menu used to display actions or links when clicking on an element.

=== Usage ===
idk you are on your own (jk ill write better one later) but heres the example
<pre>
<template>
<div class="cont">
<section class="wrap">
<div class="h-64"></div>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
<TDropdown
:dropdowns="dropdownData"
@item-click="handleItemClick"
@dropdown-open="handleDropdownOpen"
@dropdown-close="handleDropdownClose"
/>
</section>
</div>
</template>

<script setup>
const dropdownData = ref([
{
id: 'actions',
label: 'Actions',
items: [
{
id: 'edit',
label: 'Edit',
icon: 'fas fa-edit',
disabled: false
},
{
id: 'copy',
label: 'Copy',
icon: 'fas fa-copy'
},
{
},
{
id: 'delete',
label: 'Delete',
icon: 'fas fa-trash',
disabled: true
}
]
}
])

const hoverDropdowns = ref([
{
id: 'nav-menu',
label: 'Navigation',
hover: true,
items: [
{ id: 'home', label: 'Home' },
{ id: 'about', label: 'About' },
{ id: 'contact', label: 'Contact' }
]
}
])
const handleItemClick = (data) => {
console.log('Item clicked:', data)
if (data.item.id === 'profile') {
navigateTo('/profile')
} else if (data.item.id === 'logout') {
console.log('Logging out...')
}
}

const handleDropdownOpen = (index) => {
console.log('Dropdown opened:', index)
}

const handleDropdownClose = (index) => {
console.log('Dropdown closed:', index)
}

const addDropdownItem = (dropdownIndex, newItem) => {
dropdownData.value[dropdownIndex].items.push(newItem)
}

const removeDropdownItem = (dropdownIndex, itemId) => {
const dropdown = dropdownData.value[dropdownIndex]
dropdown.items = dropdown.items.filter(item => item.id !== itemId)
}
</script>
</pre>

User:Techit/Web/Components/Dropdown

2025-05-31T10:58:08Z

Techit: added hierarchy

'''Dropdown''' is a menu used to display actions or links when clicking on an element.

File:Thawiang-dropdown.png

2025-05-31T10:56:19Z

Techit: A preview of thawia.ng web dropdown web component

== Summary ==
A preview of thawia.ng web dropdown web component

User:Techit/Web/Components

2025-05-31T10:51:53Z

Techit: added thawia.ng compoents wiki page

thawia.ng's web components wiki

* [[Thawia.ng:Components/Dropdown|Dropdown]]

User:Techit/Web

2025-05-31T10:51:01Z

Techit: create page

hi this is for https://gitlab.com/techit.win/techit/web thanks

current namespace:

* [[Thawia.ng:Components]] - Nuxt web components wiki

Main Page

2025-05-31T10:49:28Z

Techit: change T to T

Welcome to Dandelion 'n' Stuff internal wiki for documenting our internal server behaviors and quirks, the editing feature for this wiki is reserved for our administrators. Those who wants to just look, it is also fine to do so. I mean, sharing knowledge wouldn't hurt, right?

สวัสดีและยินดีต้อนรับสู่วิกิส่วนตัวของแดนดิไลออนและอื่น ๆ เป็นหนังสือเอกสารกำกับและคูมือต่าง ๆ สำหรับผู้ดูแล ใครจะดูก็ดูไปนะ การแบ่งปันความรู้ไม่ผิดกฎหมาย =3=

This wiki is in both English language and Thai languages, whatever suits the person writing the documentation

วิกินี้มีทั้งภาษาไทยและอังกฤษ ใครจะใช้อะไรตามสะดวกก็ใช้

Namespace ณ ปัจจุบัน:

* [[Server:Main Page]]
* [[Docs:Main Page]]
* [[Dialect:Main Page]]
* [[Thawia.ng:Main Page]]

Miscellaneous pages:

* [[To-do list]]

== MediaWiki's default ==
<strong>MediaWiki has been installed.</strong>

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

== Getting started ==
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/postorius/lists/mediawiki-announce.lists.wikimedia.org/ MediaWiki release mailing list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Localisation#Translation_resources Localise MediaWiki for your language]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Combating_spam Learn how to combat spam on your wiki]

Main Page

2025-05-31T10:49:10Z

Techit: added thawia.ng wiki page

Welcome to Dandelion 'n' Stuff internal wiki for documenting our internal server behaviors and quirks, the editing feature for this wiki is reserved for our administrators. Those who wants to just look, it is also fine to do so. I mean, sharing knowledge wouldn't hurt, right?

สวัสดีและยินดีต้อนรับสู่วิกิส่วนตัวของแดนดิไลออนและอื่น ๆ เป็นหนังสือเอกสารกำกับและคูมือต่าง ๆ สำหรับผู้ดูแล ใครจะดูก็ดูไปนะ การแบ่งปันความรู้ไม่ผิดกฎหมาย =3=

This wiki is in both English language and Thai languages, whatever suits the person writing the documentation

วิกินี้มีทั้งภาษาไทยและอังกฤษ ใครจะใช้อะไรตามสะดวกก็ใช้

Namespace ณ ปัจจุบัน:

* [[Server:Main Page]]
* [[Docs:Main Page]]
* [[Dialect:Main Page]]
* T[[Thawia.ng:Main Page|hawia.ng:Main Page]]

Miscellaneous pages:

* [[To-do list]]

== MediaWiki's default ==
<strong>MediaWiki has been installed.</strong>

Consult the [https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents User's Guide] for information on using the wiki software.

== Getting started ==
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Configuration_settings Configuration settings list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/postorius/lists/mediawiki-announce.lists.wikimedia.org/ MediaWiki release mailing list]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Localisation#Translation_resources Localise MediaWiki for your language]
* [https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Combating_spam Learn how to combat spam on your wiki]

Copperplate

2025-05-28T13:45:16Z

Techit: add data

'''Copperplate''' was a physical server hosted at [[User:Techit|Techit]]'s house. It was originally an HP G71 laptop equipped with 3 GB of RAM and a 500 GB hard drive, later upgraded to a 120 GB SSD.

Unfortunately, we are no longer able to maintain it, as the hardware is older than Techit and maintenance costs have become unsustainable.

Server

2025-05-28T01:54:58Z

Techit: /* Deprecated servers */ added techit's servers

Welcome to pages all about our servers and containers, not to be confused with [[Docs:Main Page]]; this page is for servers information, well, technically it's also a documentation. But everything here is a documentation anyway 🤷.

== Current servers ==
Physical, touchable, see-able, in the flesh servers.

* [[Server:Thetic]]
* [[Server:NonGNU]]
* [[Server:AsusArch]]

Virtual, untouchable, you'd be lucky to see it physically servers.

* [[Server:Delta]]
* [[Server:Butterfly]]

== Deprecated servers ==
Physical, somatic, corporeal servers

* [[Server:Original]]
* [[Server:Dailitation]]
* [[Server:Copperplate]]
* [[Server:Ancient_Debris]]
* [[Server:Superbytes]]

To-do list

2025-05-28T01:51:31Z

Techit: /* Techit */

Welcome to to-do list. There's a global and admin-specific to-do list here.

== Lists ==

=== Global ===
-

=== Diskette ===

* Replace every Incus container to use a static IP address (NonGNU, Thetic, Butterfly, Delta)
* Replace the to-do above to use OVN/OVS for port routing (forwarding? I have no idea about the terminology)

=== Techit ===

* Write about ''your'' server information
* -# i retired all of my servers, thanks :(

User:Techit

2025-05-26T10:11:48Z

Techit: add basic hierarchy to user page

Techit Thawiang (Sumo; born Darunbhop Thawiang) is an ordinary 15 years old who likes to develop software for his own need. He dreams to be a software engineer and an entrepreneur.