Timeline for On the existence of a certain graph/hypergraph pair
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 30, 2018 at 22:24 | comment | added | Sam Hopkins | Ok, I think I understand. I did not realize this non-isotropic condition was enough to make the finite field case behave like the real case. | |
| Oct 30, 2018 at 22:24 | vote | accept | Sam Hopkins | ||
| Oct 30, 2018 at 22:22 | comment | added | Ilya Bogdanov | Sorry, I did not mean to say this is completely trivial;). Surely, two points $(x_1:x_2:x_3:x_4)$ and $(y_1:y_2:y_3:y_4)$ are orthogonal if $\sum x_iy_i=0$. Notice that the points orthogonal to a given non-isotropis point $p$ form a 2-dimensional projective plane which does not contain $p$. | |
| Oct 30, 2018 at 21:20 | comment | added | Sam Hopkins | Sorry, maybe the problem is indeed simple: I'm not used to thinking about these kind of configurations. But can I ask what "orthogonal" means in this context? | |
| Oct 30, 2018 at 19:34 | history | answered | Ilya Bogdanov | CC BY-SA 4.0 |