Lemmas about iSup and iInf #
theorem
sInf_add'
{α : Type u_1}
[AddCommMagma α]
[Sub α]
[CompleteLattice α]
[OrderedSub α]
{s t : Set α}
:
theorem
iInf₂_add
{α : Type u_1}
{β : Type u_2}
{ι : Type u_3}
[AddCommMagma ι]
[Sub ι]
[CompleteLattice ι]
[OrderedSub ι]
{P₁ : α → Prop}
{P₂ : β → Prop}
{f : α → ι}
{g : β → ι}
: