How to Write Psi Symbol (ψ) in LaTeX

In LaTeX, you can write the psi symbol using the \psi command for the lowercase psi (ψ) and the \Psi command for the uppercase psi (Ψ).

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

How to Write the Psi Symbol in Text

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

Suppose we want to write the psi 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 psi symbol \(\psi\) in a sentence.

\end{document}

Output: 👇️

This is an example of using the psi symbol ψ in a sentence.

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

How to Write the Psi Symbol in Mathematical Expressions

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

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

We can use the following LaTeX code to do so:

\documentclass{article}
\begin{document}

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

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

\end{document}

Output: 👇️

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

Conclusion

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