fact: Definition isrinv' {X : hSet} (x1 : X) (op : binop X) (exinv : hsubtype X) (inv : carrier_subset exinv -> X) := ∏ (x : X) (Hx : exinv x), op x (inv (x ,, Hx)) = x1.
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.QuotientSet UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.Sets UniMath.MoreFoundations.Orders UniMath.Algebra.BinaryOperations UniMath.Algebra.Apartness UniMath.OrderTheory.Lattice.Lattice