Additivity properties of topological diagonalizations
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🧮 math.LO
math.COmath.GN
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propertiesadditivityanswercertainclosedcompleteconcisecountable
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We answer a question of Just, Miller, Scheepers and Szeptycki whether certain diagonalization properties for sequences of open covers are provably closed under taking finite or countable unions. This is a very concise paper. For a self-contained, complete, and extended treatment of the topic see math.GN/0604451
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