fact: Definition CRmax_comm : forall x y : CR, CRmax x y == CRmax y x := @join_comm CRlat.
imports: CoRN.algebra.RSetoid CoRN.metric2.Metric CoRN.metric2.UniformContinuity CoRN.model.partialorder.CRpartialorder CoRN.order.SemiLattice CoRN.order.Lattice