proposition: Lemma real_addr_minr : {in real & real & real, @right_distributive R R +%R min}.
proof: Proof. by move=> x y z xr yr zr; rewrite !(addrC x) real_addr_minl. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)