当我们看这本书时,同伦类型理论 -我们看到以下主题:
Homotopy type theory
2.1 Types are higher groupoids
2.2 Functions are functors
2.3 Type families are fibrations
2.4 Homotopies and equivalences
2.5 The higher groupoid structure of type formers
2.6 Cartesian product types
2.7 S-types
2.8 The unit type
2.9 P-types and the function extensionality axiom
2.10 Universes and the univalence axiom
2.11 Identity type
2.12 Coproducts
2.13 Natural numbers
2.14 Example: equality of structures
2.15 Universal properties
现在我们知道,不是所有同伦类型理论都是可能的,Agda和Coq都是可行的。
我的问题是:同构型理论的哪些部分在Agda或Coq中是不可能的?