fact: Definition prod_beq_iff {A B eqA eqB} (A_iff : forall x y : A, eqA x y = true <-> x = y) (B_iff : forall x y : B, eqB x y = true <-> x = y) : forall x y, prod_beq eqA eqB x y = true <-> x = y.
imports: Coq.QArith.QArith Coq.Structures.Orders Coq.micromega.Lia Coq.Bool.Bool Coq.Sorting.Mergesort Coq.Lists.List Coq.ZArith.ZArith PerformanceExperiments.Sandbox