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].
| Original language | English |
|---|---|
| Pages (from-to) | 1331-1337 |
| Number of pages | 7 |
| Journal | Proceedings of the American Mathematical Society |
| Volume | 150 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2022 |