Timeline for $\pi$, disjunctive numbers, and finite sequences of given length
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
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| May 12, 2015 at 13:46 | vote | accept | Fred Rohrer | ||
| May 12, 2015 at 13:45 | answer | added | Fred Rohrer | timeline score: 4 | |
| Sep 15, 2013 at 15:22 | comment | added | Fred Rohrer | Dear @Douglas, thank you for your comments. When writing "easily checked" I was thinking indeed about brute force. It seems I underestimated this a bit. Moreover, it is clear to me that this is not a mathematically very interesting question. I met it only while teaching basics about real numbers, when some students claimed that "every sequence appears in $\pi$". Knowing that this is not known, I only wanted to be able to rightfully tell that e.g. six digit dates of birth or similar stuff does indeed appear. Anyway, between $7$ and $12$ there are still some possibilities... | |
| Sep 15, 2013 at 14:52 | comment | added | Douglas Zare | ...or to look at techniques for finding out more about the digits. These questions (see mathoverflow.net/questions/62868/…) which essentially ask people to verify that we still don't know basic things about the digits of $\pi$ don't seem like they could lead to any progress, and don't seem related to much else. Mathematicians usually try not to spend that much time on questions like this. | |
| Sep 15, 2013 at 14:50 | comment | added | Douglas Zare | I didn't vote to close. However, I have two problems with this question. First, you say, "I guess this can be easily checked for other small lengths," but I see no way to do this other than brute force, which can't extend very far because people have only computed about $10^{13}$ digits of $\pi$, which should not be enough to check for length $12$. Second, we know very little about the patterns in the decimal digits of $\pi$ or many other constants. This question is just one of many questions people have asked which is answered by that fact. What's interesting is to see what we do know,... | |
| Sep 15, 2013 at 6:13 | comment | added | Fred Rohrer | May I ask the one who voted to close to explain what he thinks is unclear about this question? | |
| Sep 15, 2013 at 5:57 | answer | added | Zurab Silagadze | timeline score: 1 | |
| Sep 15, 2013 at 5:40 | review | Close votes | |||
| Sep 15, 2013 at 9:00 | |||||
| Sep 15, 2013 at 4:50 | history | asked | Fred Rohrer | CC BY-SA 3.0 |