fact: Definition rcs (R : idomainType) n (x : 'rV[R]_n) := col_perm (rcs_perm n) x.
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