English
There is an AlgEquiv between Submodule R A and Submodule R B induced by an AlgEquiv f: A ≃ₐ[R] B, namely mapAlgEquiv f.
Русский
Существует алгебраическое эквивалентное отображение между Submodule R A и Submodule R B, индуцированное AlgEquiv f.
LaTeX
$$$\\text{Submodule}(R,A) \\simeq_{\\text{Alg}} \\text{Submodule}(R,B)$$$
Lean4
/-- The ideal obtained by pulling back the ideal `P` from `B` to `A`. -/
abbrev under : Ideal A :=
Ideal.comap (algebraMap A B) P