How to Write Lambda Symbol (λ) in LaTeX

In LaTeX, you can write the lambda symbol using the \lambda command for the lowercase lambda (λ) and the \Lambda command for the uppercase lambda (Λ).

The following examples show how to write the lambda symbol in LaTeX.

How to Write the Lambda Symbol in Text

We can use the \lambda command to write the lowercase lambda symbol in LaTeX document for text.

Suppose we want to write the lambda symbol in the text.

We can use the following LaTeX code to do so:

\documentclass{article}
\begin{document}

This is an example of using the lambda symbol \(\lambda\) in a sentence.

\end{document}

Output: 👇️

This is an example of using the lambda symbol λ in a sentence.

In this example, we use the \lambda command to display the lowercase lambda symbol in the text.

How to Write the Lambda Symbol in Mathematical Expressions

For mathematical expressions, we can use the \lambda command to ensure proper formatting.

Suppose we would like to write mathematical expressions that contain the lambda symbol.

We can use the following LaTeX code to do so:

\documentclass{article}
\begin{document}

An inline mathematical expression: \( \alpha + \beta = \lambda \).

A displayed mathematical expression:
\[
\alpha^2 + \beta^2 = \lambda^2
\]

\end{document}

Output: 👇️

In this example, we use the \lambda command to denote the lambda symbol in both inline and displayed mathematical expressions.

Conclusion

We can use the \lambda command for both text and mathematical expressions. This ensures that the lambda symbol is properly formatted and displayed in LaTeX document.