Recent and upcoming talks by Piotr Szewczak

Piotr Szewczak: The Scheepers property and products of Menger spaces

Tuesday, March 14, 2017, 17:15 Wrocław University of Technology, 215 D-1 Speaker: Piotr Szewczak (Cardinal Stefan Wyszynski University in Warsaw) Title: The Scheepers property and products of Menger spaces Abstract: A topological space $X$ is Menger if for every sequence of open covers $\mathcal{O}_1, \mathcal{O}_2,\ldots $ of the space $X$, there are finite subfamilies $\mathcal{F}_1\subseteq \mathcal{O}_1, \mathcal{F}_2\subseteq\mathcal{O}_2,\ldots $ such that their union is a cover of $X$. continue reading…

Piotr Szewczak: Products of Menger spaces

Tuesday, November 24, 2015, 17:15 Wrocław University of Technology, 215 D-1 Speaker: Piotr Szewczak (Cardinal Stefan Wyszyński University in Warsaw) Coauthor: Boaz Tsaban (Bar-Ilan University) Title: Products of Menger spaces Abstract: A topological space $X$ is Menger if for every sequence of open covers $O_1, O_2,\ldots$ there are finite subfamilies $F_1$ of $O_1$, $F_2$ of $O_2$, . continue reading…