fact: Definition helper (c : Functor 1 C) : Functors.from_terminal C (c (center _)) = c.
imports: Category.Core Functor.Core Functor.Identity Functor.Paths ExponentialLaws.Law1.Functors Functor.Composition.Core InitialTerminalCategory.Core Basics.Trunc ExponentialLaws.Tactics Basics.Tactics