fact: Definition rcsP (F: finFieldType) n (C : {set 'rV[F]_n}) := forall x, x \in C -> rcs x \in C.
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