#[deprecated(since="Coq 8.16", note="Use mono1W_in instead.")]
Notation mono2W_in := mono1W_in.

Lemma homo_mono_in : {in aD &, {homo f : x y / aR x y >-> rR x y}} -> {in rD &, {homo g : x y / rR x y >-> aR x y}} -> {in rD &, {mono g : x y / rR x y >-> aR x y}}.