Timeline for Is every field extension of an ultrafield an ultrafield?
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
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| Mar 19, 2011 at 19:10 | comment | added | Pete L. Clark | @Mark: right, I had that thought as well, but was hoping for something a little simpler...like Moret-Bailly's response below. | |
| Mar 19, 2011 at 10:17 | comment | added | user6976 | I do not have time, but you can use the fact that (at least assuming Continuum Hypothesis) every ultraproduct is saturated. | |
| Mar 19, 2011 at 5:42 | comment | added | Pete L. Clark | This is correct, but having seen this counterexample it is natural to ask about extensions of infinite ultrafields. Isn't the answer still negative? | |
| Mar 19, 2011 at 3:42 | history | edited | user6976 | CC BY-SA 2.5 |
added 27 characters in body
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| Mar 19, 2011 at 2:08 | history | answered | user6976 | CC BY-SA 2.5 |