A weakly normal ultrafilter amenable to its ultrapower

Gitik, Moti

doi:10.1090/proc/15689

A weakly normal ultrafilter amenable to its ultrapower
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by Moti Gitik

Proc. Amer. Math. Soc. 150 (2022), 1331-1337

DOI: https://doi.org/10.1090/proc/15689

Published electronically: November 19, 2021

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Abstract:

We build a weakly normal ultrafilter which is amenable to its ultrapower. This answers a question of G. Goldberg [The internal relation, arXiv:1810.04290v2, 2018].

References

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