Timeline for What is the Galois group of one ultrapower over another ultrapower?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Jan 25, 2021 at 0:04 | history | edited | Wojowu | CC BY-SA 4.0 |
added 322 characters in body
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| Jan 25, 2021 at 0:00 | comment | added | Wojowu | @AndreasBlass That's a good point, thank you. I'll add it to the answer. | |
| Jan 24, 2021 at 23:53 | comment | added | Andreas Blass | About the last sentence of the answer: If $U$ is countably complete, and $E,F$ are countable, then the ultrapowers by $U$ are canonically isomorphic to $E,F$ themselves, so the Galois group doesn't change. The same is true if the cardinalities of $E,F$ are uncountable but smaller than the first measurable cardinal. | |
| Jan 24, 2021 at 23:27 | vote | accept | Keshav Srinivasan | ||
| Jan 24, 2021 at 22:59 | history | answered | Wojowu | CC BY-SA 4.0 |