08/02/2001: Sergei Soloviev (IRIT, Toulouse)
Coercive Subtyping and Isomorphism of Types.

Résumé
Studies of coercive subtyping had shown the importance of coherence conditions. Coherence conditions permit to see clearly the connection between coercions and isomorphisms. The problem of isomorphism and subtyping of inductive types (in the context of dependent type systems) will be discussed, in connection with the problems of extensional and intensional equality etc. The talk will present the results that are partly published and partly work in progress.