proposition: Lemma size_poly_example : size poly_example = 6%N.
proof: Proof. rewrite /poly_example -addrA size_addl ?size_polyXn//. by rewrite size_addl ?size_opp ?size_scale ?size_polyX -?polyCn ?size_polyC. Qed.
imports: HB(structures) mathcomp(all_ssreflect all_fingroup all_algebra) mathcomp(all_solvable all_field polyrcf) Abel(various classic_ext map_gal algR) Abel(char0 cyclotomic_ext real_closed_ext)