Timeline for positive expression
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
|
|
| May 17, 2013 at 8:15 | vote | accept | Markus | ||
| May 14, 2013 at 12:31 | answer | added | Markus | timeline score: -1 | |
| May 10, 2013 at 7:57 | comment | added | Markus | Forgot a $(-1)^i$ in the formula | |
| May 10, 2013 at 7:56 | comment | added | Markus | Yes, it may be possible to interpret it as a inclusion-exclusion summation which would prove the positivity but I don't know how. The formula for $b_{n,k}$ comes from the condition $$\sum_{i=0}^ka_{n,i}b_{n,k-i}=0$$ | |
| May 10, 2013 at 6:01 | comment | added | Brendan McKay | Any chance that $b_{n,k}$ is an inclusion-exclusion summation? | |
| May 7, 2013 at 14:45 | history | asked | Markus | CC BY-SA 3.0 |