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arXiv · 2610.02725

A note on power spaces and function spaces of strongly well-filtered spaces

Zhenzhu Yuan·Xiangrui Li·Bei Liu·Qinggguo Li
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Abstract

Strong well-filteredness is a refinement of well-filteredness arising naturally in non-Hausdorff topology and domain theory. In this paper, we construct a countable locally compact strong R-space X such that neither its Smyth power space nor its Scott power space is a strong d-space. This example gives negative answers to the questions concerning the preservation of strong well-filteredness and the strong R-space property under power space constructions. Furthermore, for the two-point discrete space \two, the function space (\two,X) is not a strong d-space under any of the pointwise convergence, compact-open, Isbell, core-open or Scott topologies, where the Scott topology is induced by the pointwise order.

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Zhenzhu Yuan, Xiangrui Li, Bei Liu, Qinggguo Li. 2026-10-02. A note on power spaces and function spaces of strongly well-filtered spaces. https://arxiv.org/abs/2610.02725

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