Roberto Álvarez

Results 1 issues of Roberto Álvarez

This PR adds: - Group instance for `π_(n+1)` - Commutative group instance for `π_(n+2)` --- - [x] depends on: #16879 [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/from-referrer/)

WIP