theorem Set.mem_setOftheorem Set.mem_setOf: ∀ {α : Type u} {a : α} {p : α → Prop}, (a ∈ setOf fun x => p x) ↔ p a
Published by @sam · Jul 21, 2026
View source in zpg9xh52
zpg9xh52
Definitional, with no premises to accept.
Set.mem_setOf
definitional fact