19/07/18 18:26:09.84 MUH5+RGZ.net
Prove that ∩ S exists for all S ≠ φ.
Where is the assumption S ≠ φ used in the proof?
19/07/18 18:26:09.84 MUH5+RGZ.net
Prove that ∩ S exists for all S ≠ φ.
Where is the assumption S ≠ φ used in the proof?
19/07/18 18:26:09.84 MUH5+RGZ.net
Prove that ∩ S exists for all S ≠ φ.
Where is the assumption S ≠ φ used in the proof?