proposition: Lemma q_of_1s s : [q_of 1%:pr, s] = 0%:pr.
proof: Proof. by apply/val_inj => /=; rewrite q_of_rsE onem1 !mul0r. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum) mathcomp(reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(lra ring Rstruct)