---
title: "binary operation"
source: https://www.jemoka.com/posts/kbhbinary_operation/
---

A binary operation means that you are taking two things in and you are getting one thing out; for instance:
\begin{equation} f: (\mathbb{F},\mathbb{F}) \to \mathbb{F} \end{equation}
This is also closed, but binary operations doesn&rsquo;t have to be.
