Archived materials related to Homotopy Type Theory.
A textbook on informal homotopy type theory
Coq is a formal proof management system. It provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semi-interactive development of machine-checked proofs.
Development of the univalent foundations of mathematics in Coq
Homotopy type theory
Development of homotopy type theory in Agda
A formalization of M-types in Agda