Theorems · Theorem · group theory
List.sum_toFinset_count_eq_length
∀ {ι : Type u_1} [inst : DecidableEq ι] (l : List ι), ∑ a ∈ l.toFinset, List.count a l = l.length- Cited by
- 1 results in Mathlib
- Foundations
- Depth 78 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- DecidableEq
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites6
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Finset.sumstatement · cited by 5,195
- mul_oneproof · cited by 3,885
- Finset.sum_congrproof · cited by 2,323
- List.toFinsetstatement and proof · cited by 108
- List.sum_replicateproof · cited by 19
- Finset.sum_list_map_countproof · cited by 3
Cited by1
Results whose statement or proof uses this declaration.
- SimpleGraph.Walk.IsHamiltonian.length_eqproof · cited by 2