Fintype.sum_unique

∀ {M : Type u_4} {ι : Type u_7} [inst : Fintype ι] [inst_1 : AddCommMonoid M] [inst_2 : Unique ι] (f : ι → M),
  ∑ x, f x = f default

Defined in: Mathlib.Algebra.BigOperators.Group.Finset.Basic
Cited by: 6 results in Mathlib
Foundations: Depth 57 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Fintype AddCommMonoid Unique

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