Set theory and Probability theory Notations

 







Number Sets, Definition

Natural Numbers - Common counting numbers.

Prime Number - A natural number greater than 1 which has only 1 and itself as factors.

Composite Number - A natural number greater than 1 which has more factors than 1 and itself.

Whole Numbers - The set of Natural Numbers with the number 0 adjoined.

Integers - Whole Numbers with their opposites (negative numbers) adjoined.

Rational Numbers - All numbers which can be written as fractions.

Irrational Numbers - All numbers which cannot be written as fractions.

Real Numbers - The set of Rational Numbers with the set of Irrational Numbers adjoined.

Complex Number - A number which can be written in the form a + bi where a and b are real numbers and i is the square root of -1.




In set theory, constants are often one-character symbols used to denote key mathematical sets. The following table documents the most notable of these — along with their respective meaning and example.



Reference

1. https://thirdspacelearning.com/gcse-maths/probability/probability-symbol/

2. Number Sets - Math Skills Overview Guide - Library Guides at Davenport University (libguides.com)

3. https://www.rapidtables.com/math/symbols/Set_Symbols.html

4. Comprehensive List of Set Theory Symbols | Math Vault

5. https://byjus.com/maths/set-theory-symbols/


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