Theorems · Theorem · combinatorics
Finset.card_insertNone
∀ {α : Type u_1} (s : Finset α), (Finset.insertNone s).card = s.card + 1- Defined in
- Mathlib.Data.Finset.Option
- Cited by
- 0 results in Mathlib
- Foundations
- Depth 62 from the axioms · uses propext, Classical.choice, Quot.sound
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Cites8
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- DFunLike.coestatement · cited by 62,936
- Finsetstatement and proof · cited by 13,712
- Finset.cardstatement and proof · cited by 2,327
- OrderEmbeddingstatement · cited by 619
- Finset.card_mapproof · cited by 114
- Function.Embedding.someproof · cited by 43
- Finset.insertNonestatement · cited by 21
- Finset.card_consproof · cited by 16
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