📚 Recommended Mathematics Books

Topology (Munkres)  |  General Topology (Engelking)  |  Counterexamples in Topology  |  Rudin's Analysis

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I’ve partially solved my conjecture, proposed Polymath problem described at this page.

The problem asks which of certain four expressions about filters on a set are always pairwise equal.

I have proved that the first three of them are equal, equality with the fourth remains an open problem.

For the (partial) solution see this online article or my book.

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