Theorems · Theorem · order theory

antitoneOn_of_le_sub_one

∀ {α : Type u_2} {β : Type u_3} [inst : PartialOrder α] [inst_1 : Preorder β] [inst_2 : Sub α] [inst_3 : One α]
  [inst_4 : PredSubOrder α] [IsPredArchimedean α] {s : Set α} {f : α → β},
  s.OrdConnected → (∀ (a : α), ¬IsMin a → a ∈ s → a - 1 ∈ s → f a ≤ f (a - 1)) → AntitoneOn f s

Defined in

Mathlib.Algebra.Order.SuccPred

Cited by

0 results in Mathlib

Foundations

Depth 28 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

PartialOrderPreorderSubOnePredSubOrderIsPredArchimedean