proposition: Lemma cvg_addnr N : addn^~ N @ \oo --> \oo.
proof: Proof. by under [addn^~ N]funext => n do rewrite addnC; apply: cvg_addnl. Qed.
imports: HB(structures) mathcomp(all_ssreflect all_algebra finmap generic_quotient) mathcomp(boolp classical_sets functions) mathcomp(cardinality mathcomp_extra fsbigop) reals signed