Arithmetic Fuchsian group

An Arithmetic Fuchsian group is a type of Fuchsian group, which is a group of isometries of the hyperbolic plane. To understand Arithmetic Fuchsian groups, it's helpful to break down the components of the term: 1. **Fuchsian Groups**: These are groups of isometries of the hyperbolic plane, which means they consist of transformations that preserve the hyperbolic metric.