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Constructing unnatural transformations

In a nutshell, the question is: is it true that any explicit (not involving axiom of choice) pointwise transformation between sufficiently complicated functors is natural almost everywhere? Let $C$ …
Anton Fetisov's user avatar
1 vote

Homotopy type theory: Are the hierarchy of Type_k universes isomorphic?

The Univalence axiom states that homotopy equivalent types are equal. That doesn't mean the hierarchy is collapsible: that would require judgemental and not Leibniz equality. The very point of HoTT is …
Anton Fetisov's user avatar