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