Timeline for Integral positive definite quadratic forms and graphs
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Oct 5, 2021 at 4:57 | history | edited | David Roberts♦ | CC BY-SA 4.0 |
fixed arxiv front-end link and gave doi link
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| Sep 3, 2010 at 14:07 | comment | added | Gjergji Zaimi | @VA: Sorry I keep writing nonsense here. I will try to be more careful. :P | |
| Sep 3, 2010 at 14:04 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
deleted some nonsense
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| Sep 3, 2010 at 8:48 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
deleted 36 characters in body
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| Sep 3, 2010 at 8:12 | history | undeleted | Gjergji Zaimi | ||
| Sep 3, 2010 at 8:12 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
added 953 characters in body
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| Sep 2, 2010 at 12:31 | history | deleted | Gjergji Zaimi | ||
| Sep 2, 2010 at 11:40 | comment | added | VA. | Gjergji, Are you referring to a paper entitled "Sincere weakly positive unit quadratic forms"? Where can I see 'this classification'? I would like to check it out. Can you give a reference? | |
| Sep 2, 2010 at 11:33 | comment | added | VA. | Gjergji, thanks for the answer but no, these are observations are obvious, known to me, and don't go very far. Yes, $e_i$ are roots and generate the lattice, so the lattice is of $ADE$ type. From there, it is a long step, unclear to me, to classify the 2-colored graphs. For trees, it is trivial to get rid of $+1$. "Weakly positive" quad. forms are not positive definite; they are $\ge0$ on the first quadrant $\mathbb N^n$. | |
| Sep 2, 2010 at 9:42 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
added 28 characters in body
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| Sep 2, 2010 at 9:23 | history | answered | Gjergji Zaimi | CC BY-SA 2.5 |