## Section: New Software and Platforms

### Ssreflect

Keyword: Proof assistant

Scientific Description: Ssreflect is tactic language that helps writing concise and uniform tactic based proof scripts for the Coq system. It was designed during the proofs of the 4 Color Theorem and the Feit-Thompson theorem.

Functional Description: Ssreflect is a tactic language extension to the Coq system, developed by the Mathematical Components team.

News Of The Year: In 2019, we extended the intro pattern functionality of SSreflect and added support for working under binders using the "under" tactical.