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Menger's covering property and groupwise density
We establish a surprising connection between Menger's classical covering
property and Blass'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.Comment: Small update
Professional learning and work-based learning: divergence in rhetoric, convergence in reality
Original article can be found at: http://ijl.cgpublisher.com/Peer reviewe
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