Theorems · Theorem · general topology

IsExtrOn.on_preimage

∀ {α : Type u} {β : Type v} {δ : Type x} [inst : Preorder β] {f : α → β} {s : Set α} (g : δ → α) {b : δ},
  IsExtrOn f s (g b) → IsExtrOn (f ∘ g) (g ⁻¹' s) b

Defined in

Mathlib.Order.Filter.Extr

Cited by

0 results in Mathlib

Foundations

Depth 19 from the axioms · uses propext, Quot.sound

Assumes

Preorder