finsum_mem_coe_finset

∀ {α : Type u_1} {M : Type u_5} [inst : AddCommMonoid M] (f : α → M) (s : Finset α),
  ∑ᶠ (i : α) (_ : i ∈ ↑s), f i = ∑ i ∈ s, f i

Defined in: Mathlib.Algebra.BigOperators.Finprod
Cited by: 4 results in Mathlib
Foundations: Depth 82 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: AddCommMonoid

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