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Equivalence of small and $alef_\omega$ -sized examples without point-countable $pi$ -bases
A first countable (Tychonov) space is a topological space in which every point has a countable local base. A point-countable $\pi$ -base is a $\pi$ -base such that each point belongs…
Conjectureopencardinal-invariants general-topology pi-basesarXiv posted 2 days ago

Equivalence of small and alefωalef_\omegaalefω​-sized examples without point-countable pipipi-bases