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Theorems · Theorem · order theory

Multiset.sum_lt_sum

∀ {ι : Type u_1} {α : Type u_2} [inst : AddCommMonoid α] [inst_1 : Preorder α] [IsOrderedCancelAddMonoid α]
  [AddLeftStrictMono α] {s : Multiset ι} {f g : ι → α},
  (∀ i ∈ s, f i ≤ g i) → (∃ i ∈ s, f i < g i) → (Multiset.map f s).sum < (Multiset.map g s).sum
Defined in
Mathlib.Algebra.Order.BigOperators.Group.Multiset
Cited by
3 results in Mathlib
Foundations
Depth 17 from the axioms · uses propext, Quot.sound
Assumes
AddCommMonoidPreorderIsOrderedCancelAddMonoidAddLeftStrictMono

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Cited by3

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