Can you help me on this problem please?(adsbygoogle = window.adsbygoogle || []).push({});

I tried searching online, but I cannot find the proof:

In T_3 space (or regular and T_1 (any one-point set is closed)), show that every prime z-filter is contained in a unique z-ultrafilter. I feel so stupid because I spent lots of time and I cannot still do it.

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# Frustrated by this one exercise

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