math_ Number set (number set symbol) and set theory

Number set ( Number set symbol ) And set theory

ref

• Number - Wikipedia
• Integer - Wikipedia

Integers , Also called in computer applications ** integer **, yes Sequence
$$\{\dots ,-4,-3,-2,-1,0,1,2,3,4,\dots \}$$

• All of the Count Is called , Include Negtive integer 、 zero （0） And Positive integer .

• and Natural number equally , An integer is also a Countable Of Infinite set .

• This aggregate In mathematics, it usually means bold $Z$ or $\mathbb{Z}$, From the German word Zahlen（ Meaning for “ Count ”） Of The first letter .

• stay Algebraic number theory in , These belong to Rational number General Integers It will be called Rational integer , For and Gauss integers And so on .

latex Symbol

Take the opposite (Negate)/ repair (complement)

• $\mathbb{A}$
• $A^{\mathsf{c}}$
• $A^{\complement }$
• $\not\subset$
• $\overline{A}$

- $\mathbb{A}$
- $A^{\mathsf{c}}$
- $A^{\complement}$
- $\not\subset$
- $\overline{A}$