Timeline for Are hyperreal numbers isomorphic to formal power series?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Jan 24, 2015 at 20:04 | comment | added | user21349 | The product of two Laurent series need not be a Laurent series. If you want a non-archimedean field that has well-defined multiplication and division, a good candidate is the Levi-Civita field, but the LC field doesn't have $e^\omega$ where $\omega$ is infinite. It would also be odd if a structure as "natural" as the Laurent series were isomorphic to the hyperreals, since the hyperreals are non-unique in ZFC. | |
| Jan 24, 2015 at 14:55 | comment | added | Ross Millikan | This is also asked at math.stackexchange.com/questions/1117477/… | |
| Jan 24, 2015 at 14:29 | answer | added | Joel David Hamkins | timeline score: 12 | |
| Jan 24, 2015 at 12:50 | vote | accept | Anixx | ||
| Jan 24, 2015 at 12:31 | answer | added | Todd Trimble | timeline score: 14 | |
| Jan 24, 2015 at 10:32 | history | edited | Anixx | CC BY-SA 3.0 |
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| Jan 24, 2015 at 10:26 | history | asked | Anixx | CC BY-SA 3.0 |