English

On uniformly continuous surjections between $C_p$-spaces over metrizable spaces

General Topology 2025-05-06 v2

Abstract

Let XX be metrizable, YY be perfectly normal and suppose that there exists a uniformly continuous surjection T:Cp(X)Cp(Y)T: C_{p}(X) \to C_{p}(Y) (resp., T:Cp(X)Cp(Y)T: C_{p}^*(X) \to C_{p}^*(Y)), where Cp(X)C_{p}(X) (resp., Cp(X)C_{p}^*(X)) denotes the space of all real-valued continuous (resp., continuous and bounded) functions on XX endowed with the pointwise convergence topology. We show that if additionally TT is an inversely bounded mapping and XX has some dimensional-like property P\mathcal P, then so does YY. For example, this is true if P\mathcal P is one of the following properties: zero-dimensionality, countable-dimensionality or strong countable-dimensionality. Also, we consider other properties P\mathcal P: of being a scattered, or a strongly σ\sigma-scattered space, or being a Δ1\Delta_1-space (see [17]). Our results strengthen and extend several results from [6], [13], [17].

Keywords

Cite

@article{arxiv.2408.01870,
  title  = {On uniformly continuous surjections between $C_p$-spaces over metrizable spaces},
  author = {A. Eysen and A. Leiderman and V. Valov},
  journal= {arXiv preprint arXiv:2408.01870},
  year   = {2025}
}

Comments

11 pages

R2 v1 2026-06-28T18:03:14.157Z