English
There is an instance turning order isomorphisms into an inf-hom class.
Русский
Существует экземпляр, превращающий изоморфии порядка в класс гомоморфизмов, сохраняющих инфимы.
LaTeX
$$$ \\text{OrderIsoClass } F \\Rightarrow \\text{InfHomClass } F$$$
Lean4
instance (priority := 100) tosInfHomClass [CompleteLattice α] [CompleteLattice β] [OrderIsoClass F α β] :
sInfHomClass F α β :=
{ show OrderHomClass F α β from inferInstance with
map_sInf := fun f s =>
eq_of_forall_le_iff fun c => by simp only [← map_inv_le_iff, le_sInf_iff, Set.forall_mem_image] }
-- See note [lower instance priority]