Some results on the π-weight of countable Fréchet-Urysohn spaces

2025/12/10 by Dow, Alan · 1 citation
#03E35 #03E50 #54A35 #54D55 #FOS: Mathematics #General Topology (math.GN) #Logic (math.LO)

paper · doi:10.48550/arxiv.2512.09614

Abstract

The π-weight spectrum for countable regular Fréchet-Urysohn spaces is the set of uncountable cardinals that are equal to the π-weight for some such space. We determine this π-weight spectrum in the standard Miller rational perfect set model and in the Random real model.

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