Lambda Symbol

Λ λ

The lambda symbol (Λ / λ) is a letter of the Greek alphabet. This page covers its meaning across mathematics, science, and engineering, its Unicode code point, TeX command, and Windows Alt codes — and you can copy and paste the lambda symbol with one click.

Uppercase Lambda Symbol (Λ)

Symbol	Format	Data
Λ	Unicode	U+039B
Λ	HTML	Λ
Λ	CSS	\039b
Λ	JavaScript	\u039B
$\Lambda$	TeX	\Lambda
	SVG	Download ↓
	Image	Download ↓

Also known as: lambda, uppercase lambda, big lambda, greek lambda, upside down v, inverted v, eigenvalue matrix, lamda.

The Greek capital letter Lambda (Λ) is used in linear algebra for a diagonal matrix of eigenvalues arising in matrix decompositions. It may also name an index set over which a family of objects is defined. The lowercase lambda serves as the standard symbol for eigenvalues themselves.

A = Q \Lambda Q^{-1}

Lowercase Lambda Symbol (λ)

Symbol	Format	Data
λ	Unicode	U+03BB
λ	HTML	λ
λ	CSS	\03bb
λ	JavaScript	\u03BB
$\lambda$	TeX	\lambda
	SVG	Download ↓
	Image	Download ↓

Also known as: greek lambda, lowercase lambda, small lambda, lambda letter, eigenvalue symbol, wavelength symbol, lambda calculus symbol, greek l, upside down y.

Lambda is the eleventh letter of the Greek alphabet, and its lowercase form λ appears across mathematics and physics. It denotes eigenvalues of a matrix or operator, wavelengths of waves, and the rate parameter of a Poisson or exponential distribution. In computer science it marks anonymous functions in lambda calculus.

Av = \lambda v

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Lambda Symbol — Λ Greek Capital Letter Lambda, λ Greek Small Letter Lambda