Finset.isAddUnit_iff

∀ {α : Type u_2} [inst : DecidableEq α] [inst_1 : SubtractionMonoid α] {s : Finset α},
  IsAddUnit s ↔ ∃ a, s = {a} ∧ IsAddUnit a

Defined in: Mathlib.Algebra.Group.Pointwise.Finset.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 86 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: DecidableEq SubtractionMonoid

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