English
If α and β are well-founded in the order sense, then their product α × β is well-founded in the product order, via the antisymmetrization equivalence.
Русский
Если α и β хорошо основаны в порядке, то их произведение α × β также хорошо основано в произведении порядка, через эквивалентность антисимметризации.
LaTeX
$$$\\text{WellFoundedLT}(α) \\land \\text{WellFoundedLT}(β) \\Rightarrow \\text{WellFoundedLT}(α × β)$$$
Lean4
instance wellFoundedLT [WellFoundedLT α] [WellFoundedLT β] : WellFoundedLT (α × β) :=
wellFoundedLT_antisymmetrization_iff.mp <| (Antisymmetrization.prodEquiv α β).strictMono.wellFoundedLT