fact: Definition d3g {Y Z : UU} (g : Y -> Z) {z : Z} (y : Y) (ye' : hfiber g z) (e : (g y) = z) : (make_hfiber g y e) = ye' -> (pr1 ye') = y := d2 (d1g g z y) (hfiberpr1 g z) y (fibseq1g g z y) ye' e.
imports: UniMath.Foundations.Preamble