English
If C has finite products and W behaves well with respect to them, then localization preserves finite products: the functor L preserves finite products.
Русский
Если в C существуют конечные произведения, и W благопригодно себя ведёт относительно них, локализация сохраняет конечные произведения: L сохраняет конечные произведения.
LaTeX
$$$ \\text{PreservesFiniteProducts } L$$$
Lean4
/-- When `C` has finite products and `W : MorphismProperty C` contains
identities and is stable by finite products,
then any localization functor for `W` preserves finite products. -/
theorem preservesFiniteProducts : PreservesFiniteProducts L where preserves _ := preservesProductsOfShape L W _