Timeline for Groups of matrices that preserve several quadratic forms
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
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| Jul 6, 2012 at 14:45 | comment | added | travis schedler | When you say "positive definite" I assume for this you need the field to be a subfield of the real numbers, since otherwise this notion is not well-defined for quadratic forms (which is the context the poster used). One could also generalize positive-definiteness to subfields of the complex numbers if one replaces quadratic forms by Hermitian forms. | |
| Jul 6, 2012 at 11:48 | history | answered | Denis Serre | CC BY-SA 3.0 |