fact: Hypothesis well_defined3: forall (a1 a2:A) (b1 b2:B), R a1 a2 -> S b1 b2 -> T (f a1 b1) (f a2 b2).
imports: Ensembles EnsemblesImplicit Image ImageImplicit Relation_Definitions Relation_Definitions_Implicit Description ProofIrrelevance EnsemblesSpec