Timeline for show that there exist $n$ such that $r|\binom{p^n}{q^n}$
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 30, 2017 at 15:26 | review | Close votes | |||
| Oct 31, 2017 at 19:06 | |||||
| S Oct 30, 2017 at 14:46 | history | bounty ended | CommunityBot | ||
| S Oct 30, 2017 at 14:46 | history | notice removed | CommunityBot | ||
| Oct 25, 2017 at 6:52 | comment | added | zhoraster | Moreover, the bounty here had started after I wrote a comment (which I later deleted as no longer relevant) to your post on math.SE stating that I have a solution (possibly, partial), which I would post soon (and I done so in a couple of hours). What are your reasons for such misbehavior on both sites? | |
| Oct 25, 2017 at 6:47 | comment | added | zhoraster | Imo it is a bad way to cross-post. Firstly, the question were posted here just after the bounty on math.SE had started. You certainly should have waited for the bounty to expire. Secondly, you didn't acknowledge the cross-posting and didn't mention the reasons for it in you post on math.SE. Thirdly, you also started a bounty here, while the one on math.SE was active. You didn't commented on my answer yet, and you didn't acknowledge here that the answer is available. And so on. | |
| Oct 23, 2017 at 13:30 | comment | added | Pace Nielsen | Didn't Zhoraster's most recent edit answer the problem completely? | |
| S Oct 22, 2017 at 13:19 | history | bounty started | math110 | ||
| S Oct 22, 2017 at 13:19 | history | notice added | math110 | Authoritative reference needed | |
| Oct 20, 2017 at 17:57 | comment | added | Neil Strickland | There are no counterexamples among the first 200 primes. For $(p,q,r)=(2,669,1021)$ we need to go to $n=24$. | |
| Oct 20, 2017 at 14:19 | comment | added | Douglas Zare | zhoraster's answer on MSE shows that a natural approach doesn't work: There doesn't have to be a carry in the units digit. If $r=31, p=7, q=4$, then the units digit of $7^n$ is always at least the units digit of $4^n$ base $31$. | |
| Oct 20, 2017 at 11:38 | comment | added | Fedor Petrov | May I ask for what purpose do you need it? | |
| S Oct 20, 2017 at 11:37 | history | suggested | C.F.G | CC BY-SA 3.0 |
format improved
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| Oct 20, 2017 at 11:25 | review | Suggested edits | |||
| S Oct 20, 2017 at 11:37 | |||||
| Oct 20, 2017 at 11:25 | review | First posts | |||
| Oct 20, 2017 at 11:26 | |||||
| Oct 20, 2017 at 11:24 | history | asked | math110 | CC BY-SA 3.0 |