Lambda Symbol

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HTML Meaning
λ λ
Lambda Symbol (Lowercase)
The lowercase lambda symbol is frequently used in various scientific fields like computer science, physics, and mathematics to represent wavelengths, eigenvalues, or anonymous functions.
Lambda Symbol (Uppercase)
The uppercase Lambda is used less frequently but can represent sets, a logical statement in formal systems, or can act as a notation in lambda calculus.

What is the Lambda Symbol?

The Lambda symbol, denoted as λ (lowercase) and Λ (uppercase), originates from the Greek alphabet where it is the 11th letter. It has found various applications in modern academic and scientific fields. The symbol's history originates from ancient Greek language and has evolved to have multiple uses today.

Original and Variations of the Lambda Symbol

Like the Alpha symbol, Lambda also has its original form as well as several variations. Below are these forms, presented in plain text for easy copying and pasting:

  • Original Symbols: λ, Λ
  • Variations: 𝛌, 𝛬, 𝜆, 𝜦, 𝝀, 𝝠, 𝞴

Applications of the Lambda Symbol in Various Fields

The Lambda symbol (λ, Λ) is versatile and is used in multiple disciplines:

  • Mathematics: Used to signify eigenvalues in linear algebra.
  • Physics: Represents the wavelength of a wave.
  • Computer Science: Represents anonymous functions in programming languages, especially in functional programming.
  • Engineering: Commonly used to indicate wavelengths or rates of decay.
  • Linguistics: As the 11th letter of the Greek alphabet, it is often used in linguistic symbols and phonetic notations.
  • Calculus: Used as a notation in lambda calculus, a formal system in mathematical logic and computer science.

How to Type the Lambda Symbol Using Keyboard Shortcuts, Alt Codes, and LaTeX

  • Windows: Hold down the Alt key and type 955 (for lowercase) or 923 (for uppercase) on the numeric keypad, then release the Alt key.
  • Mac: Generally requires using a special character menu or copying it from elsewhere.
  • Linux: Press Ctrl + Shift + u, then type 03bb (for lowercase) or 039b (for uppercase) and press Enter.
  • HTML: For lowercase, use λ and for uppercase use Λ.
  • LaTeX: For lowercase, use the command \lambda. For uppercase, simply type \Lambda.

Symbols' Images

Lambda Symbol (Lowercase)Lambda Symbol (Uppercase)