(** Relations between domination and equivalence *)

Lemma domin_rw_r {T} {Ku Kv : AbsRing}
{U : NormedModule Ku} {V : NormedModule Kv} :
forall {F : (T -> Prop) -> Prop} {FF : Filter F} (f : T -> U) (g1 g2 : T -> V),
is_equiv F g1 g2 -> is_domin F f g1 -> is_domin F f g2.