Theorems · Theorem · combinatorics
Finset.card_disjSum
∀ {α : Type u_1} {β : Type u_2} (s : Finset α) (t : Finset β), (s.disjSum t).card = s.card + t.card- Defined in
- Mathlib.Data.Finset.Sum
- Cited by
- 3 results in Mathlib
- Foundations
- Depth 36 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites5
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Finsetstatement and proof · cited by 13,712
- Finset.cardstatement · cited by 2,327
- Finset.valproof · cited by 438
- Finset.disjSumstatement · cited by 55
- Multiset.card_disjSumproof · cited by 1
Cited by3
Results whose statement or proof uses this declaration.
- Fintype.card_sumproof · cited by 12
- Finset.card_toLeft_add_card_toRightproof · cited by 2
- add_eq_univ_of_one_le_schirelmannDensity_add_schnirelmannDensityproof · cited by 0