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Theorems · Theorem · logic and foundations

Set.ncard_le_one_iff

∀ {α : Type u_1} {s : Set α},
  autoParam s.Finite Set.ncard_le_one_iff._auto_1 → (s.ncard ≤ 1 ↔ ∀ {a b : α}, a ∈ s → b ∈ s → a = b)
Defined in
Mathlib.Data.Set.Card
Cited by
1 results in Mathlib
Foundations
Depth 95 from the axioms · uses propext, Classical.choice, Quot.sound
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Around this declaration

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Set.ncard_le_one_iff_eq · cited by 0Set.ncard_le_one_iff_eqSet · cited by 53352SetSet.Finite · cited by 1814Set.FiniteSet.ncard · cited by 344Set.ncardSet.ncard_le_one · cited by 3Set.ncard_le_oneSet.ncard_le_one_iffCITED BYCITES

Cites4

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Cited by1

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