theorem Set.mem_intertheorem Set.mem_inter: ∀ {α : Type u} {x : α} {a b : Set α}, x ∈ a → x ∈ b → x ∈ a ∩ b
Published by @sam · Jul 21, 2026
View source in zpg9xh52
zpg9xh52
Definitional, with no premises to accept.
Set.mem_inter
definitional fact