Symbols Flashcards
1
Q
mod
A
modulo
7 mod 3 = 1
2
Q
A
and
x ^ y
3
Q
∨
A
or
x ∨ y
4
Q
x’
A
not x
5
Q
¬
A
not
6
Q
⇔
A
equivalent both ways
if and only if
7
Q
⇒
A
implies
if, then
8
Q
∈
A
an element of this set
9
Q
∉
A
not an element of this set
10
Q
∀
A
for all
11
Q
∃
A
there exist
12
Q
∄
A
there does not exist
13
Q
∴
A
therefore
14
Q
∵
A
because/since
15
Q
:
A
such that
16
Q
{ }
A
set
17
Q
∪
A
union
18
Q
∩
A
intersection
19
Q
⊆
A
subset
20
Q
Ø
A
empty set
21
Q
∆
A
symmetric difference
22
Q
|B|
A
cardinality
the number of element of set B
23
Q
Q
A
rational numbers (1/2, 0.5)
24
Q
Z
A
integers
25
Q
C
A
complex (2i)
26
Q
R
A
real numbers
