
# 2: Groups I

$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$

$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$

We give a precise definition of a group and explore some different groups in the context of this definition.

### Contributors

• Tom Denton (Fields Institute/York University in Toronto)