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Theorems · Theorem · combinatorics

Multiset.fold_dedup_idem

∀ {α : Type u_1} (op : α → α → α) [hc : Std.Commutative op] [ha : Std.Associative op] [inst : DecidableEq α]
  [hi : Std.IdempotentOp op] (s : Multiset α) (b : α), Multiset.fold op b s.dedup = Multiset.fold op b s
Defined in
Mathlib.Data.Multiset.Fold
Cited by
4 results in Mathlib
Foundations
Depth 72 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
Std.CommutativeStd.AssociativeDecidableEqStd.IdempotentOp

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Cited by4

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