Set.finite_subset_iUnion

∀ {α : Type u} {s : Set α}, s.Finite → ∀ {ι : Type u_1} {t : ι → Set α}, s ⊆ ⋃ i, t i → ∃ I, I.Finite ∧ s ⊆ ⋃ i ∈ I, t i

Defined in: Mathlib.Data.Set.Finite.Lattice
Cited by: 4 results in Mathlib
Foundations: Depth 80 from the axioms · uses propext, Classical.choice, Quot.sound

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