arXiv · 1306.3194
We show that every space that is the union of a `small' family consisting of special P-sets that are F-spaces, is an F-space. We also comment on the sharpness of our results.
Klaas Pieter Hart, Leon Luo, Jan van Mill. 2013-06-13. Unions of F-spaces. https://arxiv.org/abs/1306.3194
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