English
The mapEquiv construction defines a ring equivalence between FractionalIdeaS for different localizations along a given AlgEquiv.
Русский
Конструкция mapEquiv задаёт кольцевое эквивелентство дробных идеалов между различными локализациями вдоль заданного AlgEquiv.
LaTeX
$$$ \\mathrm{mapEquiv} g : \\mathrm{FractionalIdeal} S P \\simeq_* \\mathrm{FractionalIdeal} S P' $$$
Lean4
/-- `canonicalEquiv f f'` is the canonical equivalence between the fractional
ideals in `P` and in `P'`, which are both localizations of `R` at `S`. -/
noncomputable def canonicalEquiv :=
val_proj @wrapped✝.{}