English
The identity linear map id: M → M is localized with respect to any S and any M.
Русский
Единичное отображение id: M → M локализуется относительно любого S и любого M.
LaTeX
$$$[IsLocalizedModule S (\\mathrm{id})]$$$
Lean4
theorem isLocalizedModule_id (R') [CommSemiring R'] [Algebra R R'] [IsLocalization S R'] [Module R' M]
[IsScalarTower R R' M] : IsLocalizedModule S (.id : M →ₗ[R] M)
where
map_units s := by rw [← (Algebra.lsmul R (A := R') R M).commutes]; exact (IsLocalization.map_units R' s).map _
surj m := ⟨(m, 1), one_smul _ _⟩
exists_of_eq h := ⟨1, congr_arg _ h⟩