Venn Diagrams (sets) Flashcards
1
Q
Set
A
A list or collection of objects that share a characteristic
2
Q
When listing a set what do you use
A
{ }
3
Q
∅
A
Empty set
4
Q
∈
E.g - x ∈ A
A
Element of a set
E.g - x is an element of set A
5
Q
∉
E.g - x ∉ A
A
Not an element of
E.g - x is not an element of set A
6
Q
n(A)
A
The number of elements in set A
7
Q
∪
E.g - A ∪ B
A
Union
A union with B (everything in A and B)
8
Q
∩
E.g - A ∩ B
A
Intersection
E.g - A intersection B (what’s in both A and B)
9
Q
A’
A
A compliment - everything but A
10
Q
⊂
E.g - A ⊂ B
A
Proper subset - set A is fully part of set B
11
Q
What is the format for set builder notation
A
A = {x: x is…}
X is a …. - used to describe what a set contains
