English
Under suitable hypotheses on an algebra homomorphism f : S →α[R] S' between rings with localization data, the module is localized: IsLocalizedModule M f, constructed from the algebra homomorphism, satisfies the required axioms.
Русский
При разумных предположениях над алгебра-хомоморфизмом f : S →α[R] S' между кольцами с данными локализации, модуль локализуется: IsLocalizedModule M f удовлетворяет необходимым аксиомам.
LaTeX
$$$$ \\text{IsLocalizedModule } M f^{\\text{toLinearMap}} $$$$
Lean4
@[simp]
theorem map_surjective (h : M →ₗ[R] N) (h_surj : Function.Surjective h) : Function.Surjective (map S f g h) :=
by
intro x
obtain ⟨⟨x, s⟩, rfl⟩ := IsLocalizedModule.mk'_surjective S g x
obtain ⟨x, rfl⟩ := h_surj x
exact ⟨mk' f x s, by simp⟩