proposition: Lemma __deprecated__cvgNninfty u_ : (- u_ @ \oo --> -oo) = (u_ @ \oo --> +oo).
proof: Proof. exact/propeqP/cvgNrNy. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(set_interval) reals ereal signed topology normedtype landau