Timeline for Finite series with reciprocal factorials
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Dec 16, 2017 at 10:21 | history | suggested | CommunityBot | CC BY-SA 3.0 |
Improved formatting
|
| Dec 16, 2017 at 9:08 | review | Suggested edits | |||
| S Dec 16, 2017 at 10:21 | |||||
| Oct 24, 2014 at 20:32 | comment | added | user155002 | Fair enough, but how is different from so-called elementary functions? I mean, the important thing except adding a name to a series $\sum_{k=0}^\infty{x^k\over k!}$ is that one can prove the properties of $e^x$ and relate it to other functions (as many as possible). Then it becomes useful and somehow satisfactory. So I don't see a difference between $e^x$ and $_3F_1$ from this point of view. | |
| Oct 24, 2014 at 16:48 | comment | added | Ira Gessel | This hypergeometric expression says no more and no less than that the coefficient of $x^{k+2}$ in the sum is $$\frac{1}{(n-k)!\,(k+2)}.$$ | |
| Oct 24, 2014 at 14:46 | vote | accept | user155002 | ||
| Oct 24, 2014 at 14:46 | comment | added | user155002 | Impressive, I gave up on Maple some time ago after some bad experience but... Thank you! | |
| Oct 24, 2014 at 12:36 | history | answered | joro | CC BY-SA 3.0 |