Unicode for Greek letters and common Mathematical symbols

Greek Letters

Α α Alpha
Β β Beta
Γ γ Gamma
Δ δ Delta
Ε ε Epsilon
Ζ ζ Zeta
Η η Eta
Θ θ Theta
Ι ι Iota
Κ κ Kappa
Λ λ Lambda
Μ μ Mu
Ν ν Nu
Ξ ξ Xi
Ο ο Omicron
Π π Pi
Ρ ρ Rho
Σ σ Sigma
Τ τ Tau
Υ υ Upsilon
Φ φ Phi
Χ χ Chi
Ψ ψ Psi
Ω ω Omega

Mathematical Symbols

′ prime
″ double prime
¬ not
∝ porportional
• mulitplication
⊥ independent
= equal
≠ not equal
≈ approximately equal
≤ less than or equal
≥ greater than or equal
² squared
∞ infinity
∇ nabla / gradient
𝓧 fancy X
½ half
° degrees
± plus & minus

Set Symbols

∪ union
∩ intersection
∈ element of
∉ not element of
⊆ subset
⊂ proper subset, some elements of
⊄ not a subset
⊇ superset
⊃ proper superset
⊅ not a superset
∅, Ø empty set
𝕌 set universal, set of all possible values (in the area of interest)

Statistics

x̄ x bar - sample mean
p̂ p hat - estimate
ŷ y hat - estimate
x̂ x hat - estimate
H hypothesis
0 theta - parameter
𝔼 expected value of a random variable
R² R-squared - how close the data are to the fitted regression line
F₁ F1 score - an equally weighted average of the precision and recall

Types of Numbers

𝔹 boolean (O or 1, False or True)
ℕ natural (positive integers, sometimes including 0)
ℤ integers (negative, zero, and positive integers)
ℚ rational (fraction of two integers)
ℝ real (represents a quantity along a line, most common numbers in analysis)
𝔸 algebraic (roots of a (constrained set of) polynominals)
𝕀 imaginary (for complex numbers)
ℂ complex (having both real and imaginary components)

Punctuation

· point
‧ hyphenation point
• small dot / bullet
● medium dot
— long dash
‽ interbang

brianspiering/unicode_symbols_for_greek_and_math.md