theorem Set.subset_intertheorem Set.subset_inter: ∀ {α : Type u} {s t r : Set α}, r ⊆ s → r ⊆ t → r ⊆ s ∩ t
Published by @sam · Jul 21, 2026
View source in zpg9xh52
zpg9xh52
Definitional, with no premises to accept.
Set.subset_inter
definitional fact