ƒ = Function ƒ Α = Greek capital letter alpha Α Β = Greek capital letter beta Β Γ = Greek capital letter gamma Γ Δ = Greek capital letter delta Δ Ε = Greek capital letter epsilon Ε Ζ = Greek capital letter zeta Ζ Η = Greek capital letter eta Η Θ = Greek capital letter theta Θ Ι = Greek capital letter iota Ι Κ = Greek capital letter kappa Κ Λ = Greek capital letter lambda Λ Μ = Greek capital letter mu Μ Ν = Greek capital letter nu Ν Ξ = greek capital letter xi Ξ Ο = Greek capital letter omicron Ο Π = Greek capital letter pi Π Ρ = Greek capital letter rho Ρ Σ = Greek capital letter sigma Σ Τ = Greek capital letter tau Τ Υ = Greek capital letter upsilon Υ Φ = Greek capital letter phi Φ Χ = Greek capital letter chi Χ Ψ = Greek capital letter psi Ψ Ω = Greek capital letter omega Ω α = Greek small letter alpha α β = Greek small letter beta β γ = Greek small letter gamma γ δ = Greek small letter delta δ ε = Greek small letter epsilon ε ζ = Greek small letter zeta ζ η = Greek small letter eta η θ = Greek small letter theta θ ι = Greek small letter iota ι κ = Greek small letter kappa κ λ = Greek small letter lambda λ μ = Greek small letter mu μ ν = Greek small letter nu ν ξ = Greek small letter xi ξ ο = Greek small letter omicron ο π = Greek small letter pi π ρ = Greek small letter rho ρ ς = Greek small letter sigmaf ς σ = Greek small letter sigma σ τ = Greek small letter tau τ υ = Greek small letter upsilon υ φ = Greek small letter phi φ χ = Greek small letter chi χ ψ = Greek small letter psi ψ ω = Greek small letter omega ω ϑ = Greek small letter theta symbol ϑ ϒ = Greek upsilon with hook symbol ϒ ϖ = Greek pi symbol ϖ • = Bullet, black small circle • … = Horizontal ellipsis … ′ = Prime, minutes, feet ′ ″ = Double prime, seconds, inches ″ ‾ = Overline, spacing overscore ‾ ⁄ = Fraction slash ⁄ ℘ = Script capital P, power set ℘ ℑ = Blackletter capital I, imaginary part ℑ ℜ = Blackletter capital R, real part symbol ℜ ™ = Trade mark sign ™ ℵ = Alef symbol, first transfinite cardinal ℵ ← = Leftwards arrow ← ↑ = Upwards arrow ↑ → = Rightwards arrow → ↓ = Downwards arrow ↓ ↔ = Left right arrow ↔ ↵ = Downwards arrow with corner leftwards ↵ ⇐ = Leftwards double arrow ⇐ ⇑ = Upwards double arrow ⇑ ⇒ = Rightwards double arrow ⇒ ⇓ = Downwards double arrow ⇓ ⇔ = Left right double arrow ⇔ ∀ = For all ∀ ∂ = Partial differential ∂ ∃ = There exists ∃ ∅ = Empty set, null set ∅ ∇ = Nabla, backward difference ∇ ∈ = Element of ∈ ∉ = Not an element of ∉ ∋ = Contains as member ∋ ∏ = N-ary product, product sign ∏ ∑ = N-ary sumation ∑ − = Minus sign − ∗ = Asterisk operator ∗ √ = Square root, radical sign √ ∝ = Proportional to ∝ ∞ = Infinity ∞ ∠ = Angle ∠ ∧ = Logical and, wedge ∧ ∨ = Logical or, vee ∨ ∩ = Intersection, cap ∩ ∪ = Union, cup ∪ ∫ = Integral ∫ ∴ = Therefore ∴ ∼ = Tilde operator, varies with, similar to ∼ ≅ = Approximately equal to ≅ ≈ = Almost equal to, asymptotic to ≈ ≠ = Not equal to ≠ ≡ = Identical to ≡ ≤ = Less-than or equal to ≤ ≥ = Greater-than or equal to ≥ ⊂ = Subset of ⊂ ⊃ = Superset of ⊃ ⊄ = Not a subset of ⊄ ⊆ = Subset of or equal to ⊆ ⊇ = Superset of or equal to ⊇ ⊕ = Circled plus, direct sum ⊕ ⊗ = Circled times, vector product ⊗ ⊥ = Up tack, orthogonal to, perpendicular ⊥ ⋅ = Dot operator ⋅ ⌈ = Left ceiling, apl upstile ⌈ ⌉ = Right ceiling ⌉ ⌊ = Left floor, apl downstile ⌊ ⌋ = Right floor ⌋ 〈 = Left-pointing angle bracket, bra 〈 〉 = Right-pointing angle bracket, ket 〉 ◊ = Lozenge ◊ ♠ = Black spade suit ♠ ♣ = Black club suit, shamrock ♣ ♥ = Black heart suit, valentine ♥ ♦ = Black diamond suit ♦