fact: Definition cmap_compose {A B C OA OB OC} {tA : t A OA} {tB : t B OB} {tC : t C OC} (f : cmap OA OB) (g : cmap OB OC) : cmap OA OC.
imports: SetoidClass Coq.Classes.Morphisms Coq.Arith.PeanoNat Fiat.Common.Coq__8_4__8_5__Compat