fact: Record t := mk { lcode0 :> Lcode0.t F n ; P : rcsP [set cw in lcode0] }.
imports: mathcomp(all_ssreflect ssralg poly polydiv fingroup perm) mathcomp(finalg zmodp matrix mxalgebra mxpoly polydiv vector) ssralg_ext poly_ext f2 hamming linearcode dft