Timeline for Maximum dimension of a simultaneous anisotropic subspace of quadratic forms over $ \mathbb{Q} $
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| Jan 13, 2022 at 13:22 | vote | accept | Sky | ||
| Jan 5, 2022 at 21:52 | comment | added | Antoine Labelle | @SugataMandal Two quadratic spaces are isomorphic if there is an isomorphism between the underlying vector spaces preserving the quadratic/bilinear form | |
| Jan 5, 2022 at 21:50 | answer | added | Antoine Labelle | timeline score: 2 | |
| Jan 5, 2022 at 17:12 | comment | added | Sky | how there is an isomorphism ? what does isomorphism meant here? | |
| Jan 5, 2022 at 16:39 | comment | added | GreginGre | The two quadratic forms are isomorphic over $\mathbb{Q}$. Does it help ? | |
| Jan 5, 2022 at 6:52 | comment | added | Sky | These forms come from lot of calculations , that don't help much. Does there any trick to guess the anisotropic subspace we can also think what is the maximum dimension of totally isotropic subspace. | |
| Jan 4, 2022 at 21:53 | comment | added | Antoine Labelle | Where do these particular forms come from? | |
| Jan 4, 2022 at 5:27 | comment | added | Sky | Is there any algorithm? | |
| Jan 4, 2022 at 5:26 | comment | added | Sky | I have tried , I computed some anisotropic subspace of 1st one but some vector is isotropic for 2nd one. | |
| Jan 3, 2022 at 20:10 | history | edited | LSpice | CC BY-SA 4.0 |
Wording
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| Jan 3, 2022 at 19:41 | comment | added | paul garrett | Context would help: how did these particular ones arise, or are you hoping for a general algorithm? Do you have info on the local behavior? (Thinking of Hasse-Minkowski...) | |
| Jan 3, 2022 at 19:28 | history | edited | YCor | CC BY-SA 4.0 |
formatting, added tags
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| Jan 3, 2022 at 19:24 | history | asked | Sky | CC BY-SA 4.0 |