Finset.set_biInter_singleton

∀ {α : Type u_2} {β : Type u_3} (a : α) (s : α → Set β), ⋂ x ∈ {a}, s x = s a

Defined in: Mathlib.Order.CompleteLattice.Finset
Cited by: 1 results in Mathlib
Foundations: Depth 60 from the axioms · uses propext, Classical.choice, Quot.sound

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