There exist [t.sub.1], ..., [t.sub.n] [member of] [GAMMA] such that for each t [member of] [GAMMA]\{[t.sub.1], ..., [t.sub.n]}, [X.sub.t] has trivial topology, moreover for each t [member of] {[t.sub.1], ..., [t.sub.n]}, [X.sub.t] is Alexandroff.
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