Cheat Sheet

Alex Roan

Mar 16·4 min read

1. Definitions

// Set A contains elements 1,2 and 3
A = {1,2,3}// 2 is an element of A
2∈A// 4 is not an element of A
4∉A

2. Number Sets

Naturals    N = {1,2,3,4,...}
Integers    Z = {...,-2,-1,0,1,2,...}
Rationals   Q = Ratio of 2 integers…