Timeline for Not especially famous, long-open problems which anyone can understand
Current License: CC BY-SA 4.0
138 events
| when toggle format | what | by | license | comment | |
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| Jan 2 at 22:45 | answer | added | mick | timeline score: 2 | |
| Sep 1, 2023 at 20:06 | answer | added | Oscar Lanzi | timeline score: 2 | |
| Mar 5, 2023 at 11:22 | answer | added | Dattier | timeline score: 0 | |
| Nov 9, 2022 at 11:30 | history | edited | Martin Sleziak | CC BY-SA 4.0 |
http -> https (the question was bumped anyway)
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| Oct 21, 2022 at 8:54 | answer | added | RavenclawPrefect | timeline score: 9 | |
| Sep 14, 2022 at 12:14 | answer | added | Dominic van der Zypen | timeline score: 5 | |
| Aug 18, 2021 at 19:25 | answer | added | hbjj | timeline score: 3 | |
| Aug 18, 2021 at 17:53 | answer | added | Alessandro Della Corte | timeline score: 5 | |
| Aug 18, 2021 at 16:44 | answer | added | mahdi meisami | timeline score: 8 | |
| Mar 30, 2021 at 5:13 | answer | added | Ángel Valencia | timeline score: 15 | |
| Mar 4, 2020 at 9:20 | answer | added | Valerio_xula | timeline score: 15 | |
| Jul 29, 2019 at 22:11 | history | edited | YCor | CC BY-SA 4.0 |
incorporated clarifications from comments about cryptic K12
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| Oct 4, 2018 at 10:02 | answer | added | Mickybo Yakari | timeline score: 4 | |
| Dec 18, 2017 at 4:38 | review | Close votes | |||
| Dec 18, 2017 at 9:13 | |||||
| Dec 8, 2017 at 7:08 | answer | added | Joe Franklin | timeline score: 4 | |
| Oct 14, 2017 at 3:27 | answer | added | Mohammad Ghomi | timeline score: 12 | |
| Sep 15, 2017 at 18:46 | answer | added | alvarezpaiva | timeline score: 6 | |
| Sep 15, 2017 at 14:51 | answer | added | zeraoulia rafik | timeline score: 0 | |
| Sep 15, 2017 at 14:22 | answer | added | user40023 | timeline score: 13 | |
| Nov 8, 2015 at 21:28 | answer | added | Vladimir Reshetnikov | timeline score: 4 | |
| Oct 26, 2015 at 4:22 | history | protected | CommunityBot | ||
| Oct 26, 2015 at 4:21 | answer | added | Vladimir Reshetnikov | timeline score: 10 | |
| Oct 22, 2015 at 22:57 | answer | added | Colin Reid | timeline score: 10 | |
| Oct 22, 2015 at 18:30 | answer | added | Joe Silverman | timeline score: 14 | |
| Oct 22, 2015 at 14:27 | comment | added | Per Alexandersson | What about famous problems, which are super hard to understand, but turned out to be very easy to solve? | |
| Oct 22, 2015 at 14:08 | comment | added | Marco | There seems to be a claimed proof of the union-closed sets conjecture by Blinovsky arxiv.org/abs/1507.01270 | |
| Sep 22, 2015 at 17:22 | comment | added | Jérôme JEAN-CHARLES | Chvatal conjecture ( see math.illinois.edu/~dwest/regs/chvatal.html) very manichean like Union Closed conjecture. | |
| Jul 31, 2015 at 7:14 | answer | added | Seirios | timeline score: 20 | |
| Jun 10, 2015 at 16:02 | answer | added | Juhana Siljander | timeline score: 7 | |
| Jun 7, 2015 at 19:12 | answer | added | Jim Belk | timeline score: 40 | |
| Jun 7, 2015 at 17:53 | history | edited | Ricardo Andrade |
removed inappropriate tag 'open-problem'
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| Jun 7, 2015 at 14:48 | answer | added | Tito Piezas III | timeline score: 9 | |
| Apr 22, 2015 at 9:27 | answer | added | Alexey Ustinov | timeline score: 6 | |
| Apr 22, 2015 at 8:45 | answer | added | Alexey Ustinov | timeline score: 12 | |
| Mar 28, 2015 at 14:26 | answer | added | Alexey Ustinov | timeline score: 5 | |
| Mar 28, 2015 at 12:38 | answer | added | Anurag | timeline score: 7 | |
| Dec 21, 2014 at 22:59 | answer | added | Arseniy Sheydvasser | timeline score: 19 | |
| Dec 18, 2014 at 14:17 | answer | added | Abdelmalek Abdesselam | timeline score: 12 | |
| Dec 18, 2014 at 1:46 | answer | added | Jim Conant | timeline score: 6 | |
| Dec 18, 2014 at 1:13 | answer | added | Alexandre Eremenko | timeline score: 13 | |
| Dec 17, 2014 at 15:59 | answer | added | Jan-Christoph Schlage-Puchta | timeline score: 6 | |
| Dec 17, 2014 at 9:44 | answer | added | Dominic van der Zypen | timeline score: 18 | |
| Dec 17, 2014 at 8:59 | answer | added | Dominic van der Zypen | timeline score: 23 | |
| Dec 16, 2014 at 23:02 | answer | added | Alexandre Eremenko | timeline score: 43 | |
| Dec 7, 2014 at 16:35 | answer | added | Alexandre Eremenko | timeline score: 31 | |
| Dec 2, 2014 at 21:37 | answer | added | Gabriele Fici | timeline score: 15 | |
| Nov 7, 2014 at 21:58 | comment | added | TT_ stands with Russia | Very easy to understand, hard to solve: to find an algorithm which answers for any 3 words A,B,C if consequent substitutions of word A with word B in word C can be performed infinitely or not: mathoverflow.net/questions/181057/… | |
| Mar 25, 2014 at 12:30 | review | Suggested edits | |||
| Mar 25, 2014 at 12:48 | |||||
| Mar 11, 2014 at 9:12 | answer | added | maproom | timeline score: 17 | |
| Jan 6, 2014 at 12:12 | answer | added | Vesselin Dimitrov | timeline score: 14 | |
| Dec 12, 2013 at 12:48 | review | Close votes | |||
| Dec 12, 2013 at 13:57 | |||||
| Dec 12, 2013 at 6:00 | answer | added | bof | timeline score: 8 | |
| Dec 12, 2013 at 5:29 | answer | added | bof | timeline score: 12 | |
| Dec 12, 2013 at 3:53 | history | edited | Alexey Ustinov |
[Edit removed during grace period]
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| Dec 6, 2013 at 10:47 | review | Close votes | |||
| Dec 6, 2013 at 12:41 | |||||
| Oct 20, 2013 at 23:49 | comment | added | JRN | See also math.stackexchange.com/q/532544/18398 | |
| Jul 19, 2013 at 3:02 | answer | added | Daniel Moskovich | timeline score: 16 | |
| Jun 14, 2013 at 14:59 | answer | added | The User | timeline score: 5 | |
| May 13, 2013 at 11:01 | answer | added | Santi Spadaro | timeline score: 5 | |
| May 3, 2013 at 20:20 | answer | added | Oksana Gimmel | timeline score: 41 | |
| Feb 3, 2013 at 9:58 | answer | added | Nilotpal Kanti Sinha | timeline score: 9 | |
| Nov 27, 2012 at 8:20 | answer | added | Chandan Singh Dalawat | timeline score: 26 | |
| Sep 15, 2012 at 1:24 | answer | added | Federico | timeline score: 10 | |
| Jul 30, 2012 at 0:57 | answer | added | Vladimir Reshetnikov | timeline score: 11 | |
| Jul 27, 2012 at 19:48 | answer | added | Vladimir Reshetnikov | timeline score: 16 | |
| Jul 27, 2012 at 4:40 | answer | added | Vladimir Reshetnikov | timeline score: 10 | |
| Jul 27, 2012 at 4:35 | answer | added | Vladimir Reshetnikov | timeline score: 10 | |
| Jul 27, 2012 at 4:21 | answer | added | Vladimir Reshetnikov | timeline score: 10 | |
| Jul 26, 2012 at 7:57 | answer | added | Harry Altman | timeline score: 30 | |
| Jul 26, 2012 at 1:30 | answer | added | utdiscant | timeline score: 9 | |
| Jul 25, 2012 at 6:03 | answer | added | Alexander Chervov | timeline score: 11 | |
| Jul 24, 2012 at 18:11 | answer | added | Vladimir Reshetnikov | timeline score: 6 | |
| Jul 24, 2012 at 18:11 | answer | added | Vladimir Reshetnikov | timeline score: 7 | |
| Jul 24, 2012 at 18:10 | answer | added | Vladimir Reshetnikov | timeline score: 19 | |
| Jul 24, 2012 at 18:09 | answer | added | Vladimir Reshetnikov | timeline score: 6 | |
| Jul 24, 2012 at 18:09 | answer | added | Vladimir Reshetnikov | timeline score: 5 | |
| Jul 24, 2012 at 18:08 | answer | added | Vladimir Reshetnikov | timeline score: 40 | |
| Jul 24, 2012 at 14:08 | answer | added | Zach H | timeline score: 13 | |
| Jul 24, 2012 at 13:05 | answer | added | Richard Elwes | timeline score: 11 | |
| Jul 24, 2012 at 9:49 | answer | added | Arend Bayer | timeline score: 10 | |
| Jul 24, 2012 at 2:41 | answer | added | none | timeline score: 20 | |
| Jul 22, 2012 at 17:14 | answer | added | Alexander Chervov | timeline score: 7 | |
| Jul 19, 2012 at 13:47 | answer | added | duje | timeline score: 9 | |
| Jul 19, 2012 at 12:10 | answer | added | none | timeline score: 2 | |
| Jul 18, 2012 at 22:14 | answer | added | Daniel Moskovich | timeline score: 7 | |
| Jul 14, 2012 at 11:35 | answer | added | Thomas Riepe | timeline score: 2 | |
| Jul 13, 2012 at 4:28 | answer | added | Daniel Moskovich | timeline score: 9 | |
| Jul 12, 2012 at 16:03 | answer | added | Ian Morris | timeline score: 96 | |
| Jul 12, 2012 at 13:58 | answer | added | Benoît Kloeckner | timeline score: 13 | |
| Jul 11, 2012 at 21:27 | answer | added | Dierk | timeline score: 14 | |
| Jul 3, 2012 at 14:01 | history | edited | Alexander Chervov |
tags open-problem open-problems-list
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| Jul 3, 2012 at 13:59 | answer | added | Alexander Chervov | timeline score: 9 | |
| Jul 2, 2012 at 2:12 | answer | added | paul Monsky | timeline score: 33 | |
| Jul 1, 2012 at 19:48 | answer | added | Michael Hardy | timeline score: 146 | |
| Jun 27, 2012 at 14:06 | answer | added | Gorka | timeline score: 0 | |
| Jun 27, 2012 at 0:52 | answer | added | Ian Agol | timeline score: 52 | |
| Jun 24, 2012 at 13:41 | answer | added | Ian Calvert | timeline score: 16 | |
| Jun 24, 2012 at 6:53 | answer | added | C.S. | timeline score: 12 | |
| Jun 23, 2012 at 19:09 | answer | added | David Feldman | timeline score: 8 | |
| Jun 23, 2012 at 12:10 | answer | added | Zsbán Ambrus | timeline score: 23 | |
| Jun 23, 2012 at 11:51 | answer | added | paul Monsky | timeline score: 19 | |
| Jun 23, 2012 at 9:04 | answer | added | John R Ramsden | timeline score: 30 | |
| Jun 23, 2012 at 8:34 | answer | added | David Feldman | timeline score: 63 | |
| Jun 23, 2012 at 4:18 | answer | added | C.S. | timeline score: 35 | |
| Jun 23, 2012 at 2:34 | answer | added | C.S. | timeline score: 56 | |
| Jun 23, 2012 at 0:33 | answer | added | JRN | timeline score: 165 | |
| Jun 22, 2012 at 21:50 | answer | added | Shahrooz | timeline score: 28 | |
| Jun 22, 2012 at 21:28 | answer | added | Benjamin Steinberg | timeline score: 28 | |
| Jun 22, 2012 at 20:20 | answer | added | Richard Stanley | timeline score: 49 | |
| Jun 22, 2012 at 18:24 | answer | added | Timothy Chow | timeline score: 131 | |
| Jun 22, 2012 at 13:05 | comment | added | Henry Cohn | More precisely, K-12 means anything up to high school (K = Kindergarten, 12 = 12th grade, and K-12 covers this range). | |
| Jun 22, 2012 at 12:44 | answer | added | the L | timeline score: 51 | |
| Jun 22, 2012 at 12:05 | comment | added | Emil Jeřábek | To save the search for explanation of cryptic acronyms for those of us outside US, K-12 means high school. @Mahmud: You are using a wrong meaning of the word “problem”. The TSP is not an unproved mathematical statement, it is a computational task. | |
| Jun 22, 2012 at 11:35 | answer | added | Georges Elencwajg | timeline score: 105 | |
| Jun 22, 2012 at 9:38 | comment | added | Sniper Clown | Does Traveling Salesman Problem count? (It's famous but can be explained easily to K-12 students.) | |
| Jun 22, 2012 at 7:12 | answer | added | C.S. | timeline score: 49 | |
| Jun 22, 2012 at 6:39 | answer | added | Denis Serre | timeline score: 127 | |
| Jun 22, 2012 at 4:19 | answer | added | Ng Yong Hao | timeline score: 80 | |
| Jun 22, 2012 at 3:25 | comment | added | Suvrit | Nice question!! | |
| Jun 22, 2012 at 0:46 | answer | added | Joël | timeline score: 67 | |
| Jun 22, 2012 at 0:35 | answer | added | JRN | timeline score: 84 | |
| Jun 21, 2012 at 23:46 | answer | added | Malik Younsi | timeline score: 78 | |
| Jun 21, 2012 at 23:14 | answer | added | user11000 | timeline score: 153 | |
| Jun 21, 2012 at 23:14 | answer | added | Daniel Moskovich | timeline score: 27 | |
| Jun 21, 2012 at 22:57 | answer | added | Richard Stanley | timeline score: 62 | |
| Jun 21, 2012 at 21:56 | answer | added | Paul Fabel | timeline score: 4 | |
| Jun 21, 2012 at 21:44 | answer | added | Xarles | timeline score: 106 | |
| Jun 21, 2012 at 20:53 | comment | added | Alexander Chervov | Here is some collection of some other "collect open problems" quests. on MO: mathoverflow.net/questions/96202/… PS Nice question ! PSPS may be add tag "open-problems" | |
| Jun 21, 2012 at 20:41 | answer | added | Timothy Chow | timeline score: 121 | |
| Jun 21, 2012 at 20:24 | answer | added | Timothy Chow | timeline score: 69 | |
| Jun 21, 2012 at 20:20 | answer | added | Timothy Chow | timeline score: 45 | |
| Jun 21, 2012 at 19:38 | answer | added | Yemon Choi | timeline score: 192 | |
| Jun 21, 2012 at 19:34 | history | edited | David Feldman | CC BY-SA 3.0 |
added 134 characters in body
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| Jun 21, 2012 at 19:26 | answer | added | Gerald Edgar | timeline score: 10 | |
| Jun 21, 2012 at 19:15 | answer | added | Charles | timeline score: 11 | |
| Jun 21, 2012 at 19:11 | comment | added | Gerhard Paseman | You might get more success if you sampled certain open problem lists and indicated which ones fit your list and which ones did not. I could mention various combinatorial problems such as integer complexity, determinant spectrum, covering design optimization, but I can't tell from your description if they would be suitable for you. Gerhard "They Are Suitable For Me" Paseman, 2012.06.21 | |
| Jun 21, 2012 at 18:57 | answer | added | Vidit Nanda | timeline score: 2 | |
| Jun 21, 2012 at 18:30 | history | asked | David Feldman | CC BY-SA 3.0 |