3) (i) Let X be a set containing elements a and b. Define T= {X, Ø, U| a E U and b E U}. This is a slight generalization of the particular point topology. Prove that this is a topology on X. (ii) Let X be a set containing at least three elements including a and b. Define T= {X, Ø, U| a E U or b E U}. Is this a topology on X? If so, prove it. If not, explain why not? (iii) Let X= {a, b}. Define T= {X, Ø, U] a E U or b E U}. topology on X? If so, prove it. If not, explain why not? Is this a

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