Set Theory Symbols Flashcards
1
Q
{ }
A
Set
a collection of elements
2
Q
A ∪ B
A
Union
in A or B (or both)
3
Q
A ∩ B
A
Intersection
in both A and B
4
Q
A ⊆ B
A
Subset
A has some (or all) elements of B
5
Q
A ⊂ B
A
Proper Subset
A has some elements of B
6
Q
A ⊄ B
A
Not a Subset
A is not a subset of B
7
Q
A ⊇ B
A
Superset
A has same elements as B, or more
8
Q
A ⊃ B
A
Proper Superset
A has B’s elements and more
9
Q
A ⊅ B
A
Not a Superset
A is not a superset of B
10
Q
A
Power Set
All subsets of A
11
Q
A∆B
A
Symmetric Difference
Objects that belong to A or B but not to their intersection
12
Q
A⊖B
A
Symmetric Difference
Objects that belong to A or B but not to their intersection
13
Q
A
Set Membership
Belongs to set membership
14
Q
A
No Set Membership
15
Q
A
Ordered Pair
20
Q
ℂ
A
Complex Numbers
