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Conference Papers Year : 2020

Cubical Synthetic Homotopy Theory


Homotopy type theory is an extension of type theory that enables synthetic reasoning about spaces and homotopy theory. This has led to elegant computer formalizations of multiple classical results from homotopy theory. However, many proofs are still surprisingly complicated to formalize. One reason for this is the axiomatic treatment of univalence and higher inductive types which complicates synthetic reasoning as many intermediate steps, that could hold simply by computation, require explicit arguments. Cubical type theory offers a solution to this in the form of a new type theory with native support for both univalence and higher inductive types. In this paper we show how the recent cubical extension of Agda can be used to formalize some of the major results of homotopy type theory in a direct and elegant manner.
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hal-02394145 , version 1 (13-01-2020)



Anders Mörtberg, Loïc Pujet. Cubical Synthetic Homotopy Theory. CPP 2020 - 9th ACM SIGPLAN International Conference on Certified Programs and Proofs, Jan 2020, New Orleans, United States. pp.1-14, ⟨10.1145/3372885.3373825⟩. ⟨hal-02394145⟩
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