proposition: Lemma p_of_0s s : [p_of 0%:pr, s] = 0%:pr.
proof: Proof. by apply/val_inj; rewrite /= p_of_rsE mul0r. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum) mathcomp(reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(lra ring Rstruct)