Theorems · Theorem · group theory

finprod_cond_ne

∀ {α : Type u_1} {M : Type u_5} [inst : CommMonoid M] (f : α → M) (a : α) [inst_1 : DecidableEq α]
  (hf : Function.HasFiniteMulSupport f), ∏ᶠ (i : α) (_ : i ≠ a), f i = ∏ i ∈ (Set.Finite.toFinset hf).erase a, f i

Defined in

Mathlib.Algebra.BigOperators.Finprod

Cited by

1 results in Mathlib

Foundations

Depth 81 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CommMonoidDecidableEq