Does the Null set exist?
∃ Φ →∃ Φ : Reflexive property
~∃ Φ →∃ Φ : Property of null set
Interesting Theorem
(∃ Φ →∃ Φ)↔(~∃ Φ →∃ Φ)
Russell: (A →B)↔(~A →B)
An exception to Russell’s Paradox