Finset.sum_card_slice

∀ {α : Type u_1} (𝒜 : Finset (Finset α)) [inst : Fintype α], ∑ r ≤ Fintype.card α, (𝒜.slice r).card = 𝒜.card

Defined in: Mathlib.Data.Finset.Slice
Cited by: 0 results in Mathlib
Foundations: Depth 78 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Fintype

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