Timeline for Is $\mathbb R[x,y]_+$ countably generated as a quadratic module?
Current License: CC BY-SA 3.0
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| Sep 22, 2014 at 16:10 | comment | added | Andreas Thom | I just realize that a positive polynomial does not need to realize its infimum, e.g., $f(x,y)=x^2 + (xy-1)^2$. Hence, the argument above is not complete in this form. | |
| Aug 11, 2014 at 14:28 | vote | accept | yurius | ||
| Aug 11, 2014 at 13:01 | history | answered | Andreas Thom | CC BY-SA 3.0 |