Timeline for Reflexive (hyperbolic) graphs
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Jan 9, 2014 at 23:20 | history | edited | Alex Degtyarev | CC BY-SA 3.0 |
edited title (name used in the literature)
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| Jan 9, 2014 at 18:09 | comment | added | YCor | @Alex: I was also confused by your title; I'd suggest a more suggestive title such as "Hyperbolic-like spectrum of finite graphs", or so. | |
| Jan 9, 2014 at 17:41 | answer | added | Shahrooz | timeline score: 2 | |
| Jan 9, 2014 at 4:28 | answer | added | Chris Godsil | timeline score: 1 | |
| Jan 8, 2014 at 23:23 | comment | added | Alex Degtyarev | @Chris Yes, sure. If you put $-2$ instead of $0$ to the main diagonal, the resulting quadratic form must have one positive square and any number of zeroes and/or negative squares. | |
| Jan 8, 2014 at 23:20 | comment | added | Chris Godsil | Do you allow the least eigenvalue to be less than $-2$? | |
| Jan 8, 2014 at 22:07 | comment | added | Alex Degtyarev | Sorry, I don't know the appropriate terminology. They would be (related to) Coxeter schemes of hyperbolic lattices (just like Dynkin diagrams are elliptic and affine Dynkin diagrams are parabolic). But I'm ready to rename if there is an established name for this kind of objects. | |
| Jan 8, 2014 at 21:52 | comment | added | Alain Valette | Why are you using "hyperbolic" in the title? (for me, hyperbolic graphs are graphs which are hyperbolic when viewed as metric spaces, which seems irrelevant to your question...) | |
| Jan 8, 2014 at 20:59 | history | asked | Alex Degtyarev | CC BY-SA 3.0 |