121 Sets and Relations Symbols Flashcards
1
Q
∈
A
Is an element of
2
Q
∉
A
Is not an element of
3
Q
{ … }
A
Set
4
Q
∪
A
Union
5
Q
∩
A
Intersect
6
Q
-
A
Difference
7
Q
x
A
Cartesian Product
8
Q
∅
A
Empty Set
9
Q
=
A
Equal
10
Q
≠
A
Not equal to
11
Q
|A|
A
Cardinality
12
Q
⊆
A
Subset
13
Q
⊂
A
Proper subset
14
Q
⊇
A
Superset
15
Q
⊃
A
Proper superset
