fact: Definition compute_pr1_invmap_weqfibtototal {T} {P Q:T->Type} (f:∏ t, (P t) ≃ (Q t)) (w:total2 Q) : pr1 (invmap (weqfibtototal P Q f) w) = pr1 w.
imports: UniMath.Foundations.All UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Equivalences