Author Archives: Nils Anders Danielsson

Isomorphism implies equality

Thierry Coquand and I have proved that, for a large class of algebraic structures, isomorphism implies equality (assuming univalence). A class of algebraic structures Structures in this class consist of a type, some operations on this type, and propositional axioms … Continue reading

Posted in Applications, Code, Univalence | 13 Comments

Positive h-levels are closed under W

I was asked about my proof showing that positive h-levels are closed under W (assuming extensionality), so I decided to write a short note about it. W-types are defined inductively as follows (using Agda notation): data W (A : Set) … Continue reading

Posted in Code | 18 Comments