English
If α has a bottom element, Shrink(α) inherits an OrderBot structure via the order isomorphism.
Русский
Если у α есть нижняя граница, Shrink(α) наследует структуру OrderBot через порядок-изоморфизм.
LaTeX
$$$\text{OrderBot}(\operatorname{Shrink}(\alpha))$$$
Lean4
noncomputable instance [OrderBot α] : OrderBot (Shrink.{u} α) where
bot_le
a := by simp only [← (orderIsoShrink.{u} α).symm.le_iff_le, orderIsoShrink_symm_apply, equivShrink_symm_bot, bot_le]