Theorems · Theorem · general topology

isExtrOn_dual_iff

∀ {α : Type u} {β : Type v} [inst : Preorder β] {f : α → β} {s : Set α} {a : α},
  IsExtrOn (⇑OrderDual.toDual ∘ f) s a ↔ IsExtrOn f s a

Defined in

Mathlib.Order.Filter.Extr

Cited by

2 results in Mathlib

Foundations

Depth 14 from the axioms · uses Quot.sound

Assumes

Preorder