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Theorems · Theorem · group theory

Finset.prod_sdiff

∀ {ι : Type u_1} {M : Type u_4} {s₁ s₂ : Finset ι} [inst : CommMonoid M] {f : ι → M} [inst_1 : DecidableEq ι],
  s₁ ⊆ s₂ → (∏ x ∈ s₂ \ s₁, f x) * ∏ x ∈ s₁, f x = ∏ x ∈ s₂, f x
Defined in
Mathlib.Algebra.BigOperators.Group.Finset.Basic
Cited by
10 results in Mathlib
Foundations
Depth 65 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommMonoidDecidableEq

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