proposition: Lemma npoly_inj : injective (@poly_of_npoly n R).
proof: Proof. exact: val_inj. Qed.
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype tuple) mathcomp(bigop binomial finset finfun zmodp ssralg countalg finalg poly polydiv) mathcomp(perm fingroup) CoqEAL(hrel pos param refinements binnat boolF2 seqpoly poly_op trivial_seq poly_div boolF2)