Greek, Mathematical & Set Theory Symbols

Greek alphabet — lowercase

α

alpha
α (α)

β

beta
β (β)

γ

gamma
γ (γ)

δ

delta
δ (δ)

ε

epsilon
ε (ε)

ζ

zeta
(ζ)

η

eta
(η)

θ

theta
θ (θ)

ι

iota
(ι)

κ

kappa
(κ)

λ

lambda
λ (λ)

μ

mu
μ (μ)

ν

nu
(ν)

ξ

xi
ξ (ξ)

ο

omicron
(ο)

π

pi
π (π)

ρ

rho
(ρ)

σ

sigma
σ (σ)

τ

tau
(τ)

υ

upsilon
(υ)

φ

phi
φ (φ)

χ

chi
(χ)

ψ

psi
ψ (ψ)

ω

omega
ω (ω)

Greek alphabet — uppercase

Α

Alpha
(Α)

Β

Beta
(Β)

Γ

Gamma
(Γ)

Δ

Delta
Δ (Δ)

Ε

Epsilon
(Ε)

Ζ

Zeta
(Ζ)

Η

Eta
(Η)

Θ

Theta
(Θ)

Ι

Iota
(Ι)

Κ

Kappa
(Κ)

Λ

Lambda
(Λ)

Μ

Mu
(Μ)

Ν

Nu
(Ν)

Ξ

Xi
(Ξ)

Ο

Omicron
(Ο)

Π

Pi
(Π)

Ρ

Rho
(Ρ)

Σ

Sigma
(Σ)

Τ

Tau
(Τ)

Υ

Upsilon
(Υ)

Φ

Phi
(Φ)

Χ

Chi
(Χ)

Ψ

Psi
(Ψ)

Ω

Omega
(Ω)

Common mathematical & set theory symbols

+

plus
+

−

minus
−

×

times
× (×)

÷

divide
÷ (÷)

=

equals

≠

not equal
≠ (≠)

≈

approx
≈ (≈)

≡

equiv
(≡)

<

less than
<

>

greater than
>

∈

element of
&in; (∈)

∉

not element of
(∉)

⊂

proper subset
(⊂)

⊃

proper superset
(⊃)

⊆

subset or equal
(⊆)

⊇

superset or equal
(⊇)

∪

union
∪ (∪)

∩

intersection
∩ (∩)

∖

set difference
(∖)

∅

empty set
∅ (∅)

∀

for all
(∀)

∃

exists
(∃)

∴

therefore
(∴)

∵

because
(∵)

∞

infinity
∞ (∞)

∇

nabla / del
(∇)

∂

partial derivative
(∂)

∫

integral
(∫)

∑

summation
(∑)

√

square root
(√)

→

right arrow
(→)

←

left arrow
(←)

↔

leftright arrow
(↔)

Other useful symbols

|

vertical bar (divides)

⌈ ⌉

ceiling
(⌈ ⌉)

⌊ ⌋

floor
(⌊ ⌋)

ℵ

aleph (cardinality)
(ℵ)

℘

power set symbol
(℘)