Timeline for How big can a commutative subalgebra of Weyl algebra be?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 26, 2013 at 18:10 | vote | accept | John | ||
| Aug 22, 2013 at 19:19 | vote | accept | John | ||
| Aug 26, 2013 at 18:10 | |||||
| Aug 20, 2013 at 20:20 | comment | added | David E Speyer | @WillSawin Yup. Some explicit examples appear on page 412 of link.springer.com/content/pdf/10.1007%2F0-8176-4478-4.pdf : Makar-Limanov gives several examples, due to other people, of $h$ in $\mathrm{Frac}(A_1)$ such that $h^2$ and $h^3$ are in $A_1$ but $h$ is not. ($A_1$ is an Ore domain, which means it has a good notion of a field of fractions.) | |
| Aug 20, 2013 at 19:55 | comment | added | Will Sawin | Do the papers state that $R$ need not be equal to $\tilde{R}$ even if $R$ is maximal? | |
| Aug 20, 2013 at 17:09 | history | edited | David E Speyer | CC BY-SA 3.0 |
added 108 characters in body
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| S Aug 20, 2013 at 16:21 | history | answered | David E Speyer | CC BY-SA 3.0 | |
| S Aug 20, 2013 at 16:21 | history | made wiki | Post Made Community Wiki by David E Speyer |