English
Under LocallyFiniteOrder, the Ico interval on the subtype matches the subtype of the Ico interval in α: Ico a b = (Ico(a.val, b.val)).subtype p.
Русский
При LocallyFiniteOrder интервал Ico на подтипе совпадает с подтипом интервала Ico в α: Ico a b = (Ico(a.val, b.val)).subtype p.
LaTeX
$$$$ \\mathrm{Ico}(a,b) = \\mathrm{subtype}\\ p\\bigl( \\mathrm{Ico}(a.\\mathrm{val}, b.\\mathrm{val}) \\bigr). $$$$
Lean4
theorem subtype_Ico_eq : Ico a b = (Ico (a : α) b).subtype p :=
rfl