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Discreet Structures: Module 1 Cheat Sheet by

Module 1: Sets and Relations

Common Sets

N
All Natural numbers = {1, 2, 3, 4, ...}
Z
All Integers = {..., −2, −1, 0, 1, 2, ...}
Z+
All Positive integers = {0, 1, 2, ...}

Common Sets (copy)

N
All Natural numbers = {1, 2, 3, 4, ...}
Z
All Integers = {..., −2, −1, 0, 1, 2, ...}
Z+
All Positive integers = {0, 1, 2, ...}
 

Examples

4 ∈ A
4 is an element of A
2 ∉ A
2 is not an element of A

Examples (copy)

4 ∈ A
4 is an element of A
2 ∉ A
2 is not an element of A
 

Examples (copy)

4 ∈ A
4 is an element of A
2 ∉ A
2 is not an element of A

Examples (copy) (copy)

4 ∈ A
4 is an element of A
2 ∉ A
2 is not an element of A

Examples (copy) (copy) (copy)

4 ∈ A
4 is an element of A
2 ∉ A
2 is not an element of A
   
 

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