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Theorems · Theorem · combinatorics

Finset.filter_union_filter_not_eq

∀ {α : Type u_1} (p : α → Prop) [inst : DecidablePred p] [inst_1 : DecidableEq α] [inst_2 : (x : α) → Decidable ¬p x]
  (s : Finset α), Finset.filter p s ∪ {a ∈ s | ¬p a} = s
Defined in
Mathlib.Data.Finset.Basic
Cited by
16 results in Mathlib
Foundations
Depth 60 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
DecidablePredDecidableEqDecidable

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Cited by16

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