fact: Definition lfun_lalgMixin := GRing.Lmodule_isLalgebra.Build R lfun_ringType (fun k x y => comp_lfunZr k y x).
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop finfun tuple) mathcomp(ssralg matrix mxalgebra zmodp)