Universal models and definability

Abstract

We show that the investigation of universal models in Topos Theory can shed light on problems of definability in Logic as well as on the investigation of De Morgan's law and the law of excluded middle on Grothendieck toposes.

31 pages

References in corpus (2)

• One topos, many sites
• Atomic toposes and countable categoricity

Cited by in corpus (2)

• Topos and Stacks of Deep Neural Networks
• Extensions of flat functors and theories of presheaf type