Timeline for Absolute sum of coefficient of (1-x)^b (1+x)^{(n-b)}
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Nov 28, 2012 at 22:04 | vote | accept | user29295 | ||
| S Nov 28, 2012 at 22:04 | vote | accept | user29295 | ||
| Nov 28, 2012 at 22:04 | |||||
| Nov 28, 2012 at 22:04 | vote | accept | user29295 | ||
| S Nov 28, 2012 at 22:04 | |||||
| Nov 22, 2012 at 4:04 | comment | added | Igor Rivin | You DO NOT need a closed form to get estimates. See my answer. | |
| Nov 22, 2012 at 4:03 | answer | added | Igor Rivin | timeline score: 3 | |
| Nov 22, 2012 at 3:44 | answer | added | Richard Stanley | timeline score: 2 | |
| Nov 22, 2012 at 1:00 | comment | added | user29295 | @Stanley: Thank you very much for your kind help. I have tried to understand main results from these papers. But there is no such closed form. I need closed form as a function of $b,n$ so that I can calculate upper bound on $\sum_{i=0}^n |a_i|$. Thank you again for your help. | |
| Nov 21, 2012 at 18:57 | history | edited | user29295 | CC BY-SA 3.0 |
edited body; edited title
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| Nov 21, 2012 at 18:51 | comment | added | Richard Stanley | The coefficient $a_i$ is a value of a Krawtchouk polynomial. A lot is known about their asymptotics. See for instance www6.cityu.edu.hk/rcms/publications/preprint21.pdf and references [11] and [15] therein. | |
| Nov 21, 2012 at 18:31 | history | edited | José Hdz. Stgo. | CC BY-SA 3.0 |
added 14 characters in body
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| Nov 21, 2012 at 17:59 | comment | added | Igor Rivin | a. Typeset your question. b. the symbol $e$ stands for a frequently used constant, and using it in this context is very confusing. | |
| Nov 21, 2012 at 17:55 | history | asked | user29295 | CC BY-SA 3.0 |