Timeline for "Pythagoras number" for integral matrices
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 14, 2015 at 11:40 | vote | accept | Hans | ||
| Oct 14, 2015 at 5:08 | answer | added | WKC | timeline score: 5 | |
| Oct 13, 2015 at 19:47 | comment | added | few_reps | As an alternative to my answer below, which doesn't seem very efficient, there might be some Siegel Theta argument, but I know almost nothing about that and my frenetic googling gave nothing. So consider Siegel's $\theta^{(m)}$ for $\mathrm{I}_n$. It is the sum of an Eisenstein (or linear comb. of such) series and a cuspidal one. If you have enough inequalities on their Fourier coeffs to ensure that, say, for $n>2m$, the Eisenstein coefs are very big while the cusp. coefs are relatively small, then you are done. Some MO experts might tell you if this is realistic or not. | |
| Oct 13, 2015 at 9:43 | answer | added | few_reps | timeline score: 7 | |
| Oct 13, 2015 at 8:24 | history | asked | Hans | CC BY-SA 3.0 |