Marriallis and Shelah solved in the positive the longstanding problem of whether the two cardinal invariants \(\mathfrakp\) (the pseudointersection number) and \(\mathfrakt\) (the tower number) are equal. In this talk, I will review some essential points in their proof in order to motivate the study of the analogous question for the generalized characteristics \(\mathfrakp(\kappa)\) and \(\mathfrakt(\kappa)\). I will present some results of Garti regarding this generalization and finally some recent progress (joint work with Fischer, Schilhan, and Soukup) towards answering this question.
The equality $\mathfrakp=\mathfrakt$ and the generalized characteristics
04.04.2019 15:00 - 16:30
Organiser:
KGRC
Location:
SR 101, 2. St., Währinger Str. 25