Symbol

Symbol Name

Symbol

Symbol Name
 
=

equals sign



perpendicular
 
≠

not equal sign



parallel
 
>

strict inequality

≅

congruent to
 
<

strict inequality

~

similarity
 
≥

inequality

Δ

triangle
 
≤

inequality

xy

distance
 
( )

parentheses

π

pi constant

[ ]

brackets

rad

radians
 
+

plus sign

grad

grads
 
−

minus sign

x

x variable
 
±

plus  minus

≡

equivalence
 
∓

minus  plus

≜

equal by definition
 
*

asterisk

:=

equal by definition
 
×

times sign

~

approximately equal
 
∙

multiplication dot

≈

approximately equal
 
÷

division sign / obelus

∝

proportional to
 
/

division slash

∞

lemniscate
 
–

horizontal line

≪

much less than
 
Mod

modulo

≫

much greater than
 
.

period

( )

parentheses
 
ab

power

[ ]

brackets
 
a^b

caret

{ }

braces
 
√a

square root

x!

exclamation mark
 
3√a

cube root

 x 

single vertical bar
 
4√a

fourth root

f (x)

function of x
 
n√a

nth root (radical)

(f ∘g)

function composition
 
%

percent

(a,b)

open interval
 
‰

permille

[a,b]

closed interval
 
ppm

permillion

∆

delta
 
ppb

perbillion

∆

discriminant
 
ppt

pertrillion

∑

sigma
 
∠

angle

∑∑

sigma
 
∟

right angle

∏

capital pi
 
º

degree

E

e constant / Euler's number
 
´

arcminute

Γ

EulerMascheroni constant
 
´´

arcsecond

Φ

golden ratio
 
AB

line segment

Π

pi constant
 
∙

dot

Q2

median / second quartile
 
×

cross

Q3

upper / third quartile
 
A⊗B

tensor product

X

sample mean
 
[ ]

brackets

S 2

sample variance
 
( )

parentheses

S

sample standard deviation
 
 A 

determinant

zx

standard score
 
det(A)

determinant

X ~

distribution of X
 
 x 

double vertical bars

N(μ,σ2)

normal distribution
 
A T

transpose

U(a,b)

uniform distribution
 
A †

Hermitian matrix

exp(λ)

exponential distribution
 
A *

Hermitian matrix

gamma(c, λ)

gamma distribution
 
A 1

inverse matrix

Χ 2(k)

chisquare distribution
 
Rank(A)

matrix rank

F (k1, k2)

F distribution
 
dim(U)

dimension

Bin(n,p)

binomial distribution
 
P(A)

probability function

Poisson(λ)

Poisson distribution
 
P(A ∩ B)

probability of events intersection

Geom(p)

geometric distribution
 
P(A ∪ B)

probability of events union

HG(N,K,n)

hypergeometric distribution
 
P(A  B)

conditional probability function

Bern(p)

Bernoulli distribution
 
F (x)

probability density function (pdf)

N!

Factorial
 
F(x)

Cumulative distribution function (cdf)

nPk

permutation
 
Μ

population mean

{ }

Set
 
E(X)

Expectation value

A ∩ B

intersection
 
E(X  Y)

conditional expectation

A ∪ B

union
 
var(X)

variance

A ⊆ B

subset
 
Σ2

variance

A ⊂ B

proper subset / strict subset
 
std(X)

standard deviation

A ⊄ B

not subset
 
σX

standard deviation

A ⊇ B

superset
 
median

A ⊃ B

proper superset / strict superset
 
cov(X,Y)

covariance

A ⊅ B

not superset
 
corr(X,Y)

correlation

2A

power set
 
ρX,Y

correlation

A = B

equality
 
∑

summation

Ac

complement
 
∑∑

double summation

A \ B

relative complement
 
Mo

mode

A  B

relative complement
 
MR

midrange

A ∆ B

symmetric difference
 
Md

sample median

A ⊖ B

symmetric difference
 
Q1

lower / first quartile

a∈A

element of
 
x∉A

not element of

∰

closed volume integral
 
(a,b)

ordered pair

i

imaginary unit
 
A×B

cartesian product

Z*

complex conjugate
 
A

cardinality

z

complex conjugate
 
#A

cardinality

∇

nabla / del
 
Ø

empty set

x * y

convolution
 
·

and

δ

delta function
 
^

caret / circumflex

∞

lemniscate
 
&

ampersand

α

Alpha
 
+

plus

β

Beta
 
∨

reversed caret

γ

Gamma
 


vertical line

δ

Delta
 
x'

single quote

ε

Epsilon
 
x

bar

ζ

Zeta
 
¬

not

η

Eta
 
!

exclamation mark

θ

Theta
 
⊕

circled plus / oplus

ι

Iota
 
~

tilde

κ

Kappa
 
⇒

implies

λ

Lambda
 
⇔

equivalent

μ

Mu
 
↔

equivalent

ν

Nu
 
∀

for all

ξ

Xi
 
∃

there exists

ο

Omicron
 
∄

there does not exists

π

Pi
 
∴

therefore

ρ

Rho
 
∵

because / since

σ

Sigma
 
ε

epsilon

τ

Tau
 
e

e constant / Euler's number

υ

Upsilon
 
y '

derivative

φ

Phi
 
Y ''

second derivative

χ

Chi
 
Y(n)

nth derivative

ψ

Psi
 
Dx y

derivative

ω

Omega
 
Dx2 y

second derivative

∫

Integral
 
∭

triple integral

∬

double integral
 
∮

closed contour / line integral

∯

closed surface integral

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