Essential Physics

Mathematical signs and symbols

**Table 9: Mathematical symbols**
Symbol	Description	Symbol	Description
∝	is proportional to	=	is equal to
≡	is equivalent to	≈	is approximately equal to
≥	is greater than or equal to	≤	is less than or equal to
>	is greater than	<	is less than
∞	infinity	Δx	change in x
π	= 3.14159	e	= 2.7183

**Table 10: Greek alphabet**
Name	Uppercase	Lowercase	Name	Uppercase	Lowercase	Name	Uppercase	Lowercase
Alpha	Α	α	Iota	Ι	ι	Rho	Ρ	ρ
Beta	Β	β	Kappa	Κ	κ	Sigma	Σ	σ
Gamma	Γ	γ	Lambda	Λ	λ	Tau	Τ	τ
Delta	Δ	δ	Mu	Μ	μ	Ypsilon	Υ	υ
Epsilon	Ε	ε	Nu	Ν	ν	Phi	Φ	φ
Zeta	Ζ	ζ	Xi	Ξ	ξ	Chi	Χ	χ
Eta	Η	η	Omicron	Ο	ο	Psi	Ψ	ψ
Theta	Θ	θ	Pi	Π	π	Omega	Ω	ω


		827