# How to Insert a Delta Symbol (Δ,𝛿) in LaTeX and other Apps

LaTeX: | `$\delta$ or $\Delta$` |

HTML: | `δ` |

Unicode: | `U+03B4` |

You can write a small delta in a LaTeX document by using `\(\delta \)`

or `$\delta$`

. For a capital delta (Δ) you have to write `\(\Delta \)`

or `$\Delta$`

.

In addition to inline usage, Delta symbols are quite commonly used in equation or math environments. For example, to display the Greek Delta symbol in a fraction on its own line, LaTeX provides simple and intuitive formatting capabilities:

When the above LaTeX code is compiled, it creates a centered mathematical fraction on its own line with the denominator Δx and numerator Δy.

LaTeX also provides a lot of flexibility when it comes to typesetting mathematical functions involving Greek symbols. Let's say, we want to represent a function that uses both uppercase and lowercase Delta symbols. LaTeX offers an elegant way of handling this:

When compiled, this creates a centered equation on its own line that demonstrates a function of delta.