English
The collection of Heyting algebra homomorphisms between α and β carries the structure of a HeytingHomClass, i.e., it preserves the operations sup, inf, bottom, and implication.
Русский
Набор гомоморфизмов алгебр Хейтинга α → β образует структуру HeytingHomClass, сохраняющую операции союз (∨), пересечение (∧), ноль и импликацию.
LaTeX
$$$\\text{HeytingHomClass}(\\mathrm{HeytingHom}(\\alpha,\\beta), \\alpha, \\beta)$$$
Lean4
instance instHeytingHomClass : HeytingHomClass (HeytingHom α β) α β
where
map_sup f := f.map_sup'
map_inf f := f.map_inf'
map_bot f := f.map_bot'
map_himp := HeytingHom.map_himp'