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Towers of Borel functions

By James Hirschorn and Communicated Alan Dow

Abstract

Abstract. We give mathematical reformulations of the cardinals p and t in terms of families of Borel functions. As an application we show that t is invariant under the addition of a single Cohen real. 1

Year: 2013
OAI identifier: oai:CiteSeerX.psu:10.1.1.353.4028
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