proposition: Lemma nbhs_pinfty_real : \forall x \near +oo, x \is @Num.real R.
proof: Proof. by apply: filterS (nbhs_pinfty_gt (@real0 _)); apply: gtr0_real. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrint ssrnum finmap matrix) mathcomp(rat interval zmodp vector fieldext falgebra) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality set_interval Rstruct) ereal reals signed topology prodnormedzmodule