fact: Definition linfun_def aT rT (f : aT -> rT) := Hom (lin1_mx (v2r \o f \o r2v)).
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype bigop finfun tuple) mathcomp(ssralg matrix mxalgebra zmodp)