Abstract
We establish a surprising connection between Menger’s classical covering property and Blass-Laflamme’s modern combinatorial notion of groupwise density. This connection implies a short proof of the groupwise density bound on the additivity number for Menger’s property.
Citation
Boaz Tsaban. Lyubomyr Zdomskyy. "Menger’s covering property and groupwise density." J. Symbolic Logic 71 (3) 1053 - 1056, September 2006. https://doi.org/10.2178/jsl/1154698591
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