Towers of Borel functions
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- by James Hirschorn PDF
- Proc. Amer. Math. Soc. 128 (2000), 599-604 Request permission
Abstract:
We give mathematical reformulations of the cardinals $\mathfrak p$ and $\mathfrak t$ in terms of families of Borel functions. As an application we show that $\mathfrak t$ is invariant under the addition of a single Cohen real.References
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Additional Information
- James Hirschorn
- Affiliation: Department of Mathematics, University of Toronto, Toronto, Canada
- MR Author ID: 633758
- Email: hirschor@math.toronto.edu
- Received by editor(s): January 5, 1998
- Received by editor(s) in revised form: March 30, 1998
- Published electronically: July 7, 1999
- Communicated by: Alan Dow
- © Copyright 1999 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 128 (2000), 599-604
- MSC (1991): Primary 03E10; Secondary 03E40, 28A20
- DOI: https://doi.org/10.1090/S0002-9939-99-05013-3
- MathSciNet review: 1621933