proposition: Lemma littleo (F : set_system T) (g : T -> W) (f : {o_F g}) : littleo_spec F g f.
proof: Proof. by constructor; apply/(@littleoP F). Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum) mathcomp(mathcomp_extra boolp classical_sets functions) ereal reals signed topology normedtype prodnormedzmodule