Asaf Karagila: Spectra of Uniformity

The FG1 Seminar of TU Wien

On Friday Oct 6 at 15:00,  we will meet in the “Dissertantenraum” of the Institute for Discrete Mathematics and Geometry, TU Wien, Wiedner Hauptstr 8-10, 8th floor, green area.

Speaker:  Asaf Karagila

Title: Spectra of Uniformity

Abstract: The existence of uniform ultrafilters on infinite sets is predicated
on the axiom of choice. We discuss some related results, and prove an
Easton-like theorem showing the class of cardinals which carry uniform
ultrafilters has very few provable properties without the axiom of choice.

This is a joint work with Yair Hayut, and can be found on
https://arxiv.org/abs/1709.04824

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