A dichotomy for Borel functions
classification
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math.LO
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dichotomyborelfunctionfunctionssoleckiargumentbairecite
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The dichotomy discovered by Solecki in \cite{Sol} states that any Baire class 1 function is either $\sigma$-continuous or "includes" the Pawlikowski function $P$. The aim of this paper is to give an argument which is simpler than the original proof of Solecki and gives a stronger statement: a dichotomy for all Borel functions.
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