Timeline for A number theory problem where pi appears surprisingly
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Sep 20, 2022 at 10:37 | comment | added | Fred Daniel Kline | In this (deleted) post: mathoverflow.net/questions/428474/…, which was designed to eliminate all real numbers, I found that by violating that constraint, $\sqrt{\pi}$ often occurred. Not sure why. This is informational only. | |
| Sep 19, 2022 at 0:42 | history | became hot network question | |||
| Sep 19, 2022 at 0:25 | answer | added | Terry Tao | timeline score: 101 | |
| Sep 18, 2022 at 22:01 | comment | added | Lucia | This seems closely connected to the Flavius sieve, studied already by Viggo Brun. See oeis.org/A000960 and these earlier MO questions: mathoverflow.net/questions/193933/… and mathoverflow.net/questions/146733/… | |
| Sep 18, 2022 at 17:41 | history | edited | GH from MO |
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| Sep 18, 2022 at 14:58 | comment | added | Steven Clark | @GHfromMO Here's a table of evaluations where the middle column is the simplified fraction with no common factor in the numerator and denominator.$$\left( \begin{array}{ccc} M & \frac{a_1}{M^2} & \frac{a_1}{M^2} \\ 10 & \frac{169}{50} & 3.38 \\ 100 & \frac{15803}{5000} & 3.1606 \\ 1000 & \frac{785687}{250000} & 3.14275 \\ 10000 & \frac{157087303}{50000000} & 3.14175 \\ 100000 & \frac{15708056399}{5000000000} & 3.14161 \\ 1000000 & \frac{785399045063}{250000000000} & 3.1416 \\ 10000000 & \frac{157079647261969}{50000000000000} & 3.14159 \\ \end{array} \right)$$ | |
| Sep 18, 2022 at 8:35 | comment | added | mathworker21 | maybe related . | |
| S Sep 18, 2022 at 7:51 | review | First questions | |||
| Sep 18, 2022 at 7:57 | |||||
| S Sep 18, 2022 at 7:51 | history | asked | Andrew Sakura | CC BY-SA 4.0 |