Projective versions of the properties in the Scheepers Diagram

Abstract

Let $\mathcal{P}$ be a topological property. A.V. Arhangel'skii calls $X$ projectively $\mathcal{P}$ if every second countable continuous image of $X$ is $\mathcal{P}$. Lj.D.R. Ko$\check{c}$inac characterized the classical covering properties of Menger, Rothberger, Hurewicz and Gerlits-Nagy in term of continuous images in ${\mathbb{R}}^{\omega }$. In this paper we study the functional characterizations of all projective versions of the selection properties in the Scheepers Diagram.

30 pages, 3 figures. arXiv admin note: text overlap with arXiv:1708.06404, arXiv:1710.07272, arXiv:1805.11019