Finset.sigma

{ι : Type u_1} → {α : ι → Type u_2} → Finset ι → ((i : ι) → Finset (α i)) → Finset ((i : ι) × α i)

s.sigma t is the finset of dependent pairs ⟨i, a⟩ such that i ∈ s and a ∈ t i.

Defined in: Mathlib.Data.Finset.Sigma
Cited by: 69 results in Mathlib
Foundations: Depth 62 from the axioms · uses propext, Classical.choice, Quot.sound

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