English
There is an instance giving the module topology on the quotient A/S, induced by the quotient map.
Русский
Существует экземпляр, задающий модульную топологию на фактор-модуле A/S, индуцированную через фактор-мэп.
LaTeX
$$$IsModuleTopology R (A/S)$$$
Lean4
instance instQuot (S : Submodule R A) : IsModuleTopology R (A ⧸ S) :=
by
constructor
have := toContinuousAdd R A
have quot := (Submodule.isOpenQuotientMap_mkQ S).isQuotientMap.eq_coinduced
have module := ModuleTopology.eq_coinduced_of_surjective <| Submodule.mkQ_surjective S
rw [quot, module]