Timeline for Functionals on oriented matroids
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 8, 2013 at 3:57 | comment | added | Benjamin Steinberg | I was was able to translate your argument into tope graphs. Thanks so much. I was actually quite close because I knew the wall between two chambers with opposite signs under $\phi$ had to be sent to zero but didn't see how to move this around. | |
| Aug 8, 2013 at 3:49 | vote | accept | Benjamin Steinberg | ||
| Aug 8, 2013 at 3:19 | comment | added | Benjamin Steinberg | actually it seems to me that there should be an $e$ so that $\phi=\phi_e$ or $-\phi_e$, which is what I should really have asked for in my question I suppose. I think I almost see how to write this algebraically but will think more. | |
| Aug 8, 2013 at 2:59 | comment | added | Benjamin Steinberg | thanks for this. I will think about this. I was thinking along similar lines using the tope graph and an argument like what you have in the 4th paragraph. But I didn't think to use induction. | |
| Aug 8, 2013 at 1:17 | history | answered | Hugh Thomas | CC BY-SA 3.0 |