Timeline for Proofs without words
Current License: CC BY-SA 4.0
129 events
| when toggle format | what | by | license | comment | |
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| Nov 21 at 20:36 | answer | added | no upstairs | timeline score: -1 | |
| Aug 23, 2023 at 7:51 | answer | added | Janaka Rodrigo | timeline score: -1 | |
| Jul 28, 2023 at 18:24 | answer | added | Taras Banakh | timeline score: 4 | |
| Jul 28, 2023 at 16:50 | answer | added | Benoît Kloeckner | timeline score: 6 | |
| Jun 19, 2023 at 7:32 | answer | added | C.F.G | timeline score: 2 | |
| Nov 3, 2022 at 15:30 | answer | added | Veronica Phan | timeline score: 5 | |
| Sep 9, 2021 at 13:57 | comment | added | msh210 | puzzling.stackexchange.com/a/111543/93 | |
| Dec 23, 2020 at 8:56 | history | edited | Martin Sleziak | CC BY-SA 4.0 |
http -> https (the question was bumped anyway)
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| Sep 1, 2020 at 8:08 | answer | added | C.F.G | timeline score: 12 | |
| Jun 2, 2019 at 20:18 | comment | added | user141368 | I think you should apologize to goblin here, because he raised a valid point about a particular limitation of your question, and you made an ad hominem attack against him (quite successfully, because of your well-established reputation here most probably). An appropriate reply to him might have been "Yes, this is an ambiguous question, but while I can not provide a complete definition, I believe there is fairly clear community consensus on what a proof without words is, so I think the question is fine", in my opinion. | |
| Jun 2, 2019 at 20:17 | comment | added | user141368 | That by itself does not mean this is a bad question, it is actually a pretty good question, but if you can not give a complete definition of a "proof without word" that is the limitation of the question, not of the people who recognize it as a somewhat ambiguous question. In this case, there can be quite clear community consensus on what is a proof without word, but still it is you who failed to prove a definition of a proof without word, and only because of the existence of community consensus this question is answerable at all. | |
| Jun 2, 2019 at 20:17 | comment | added | user141368 | @MarianoSuárez-Álvarez Dear Dr. Suárez-Álvarez, you are a much-valued contributor on this site, no doubt. Much more important than I am, for example. But when you said "that is clearly a limitation of yours", I think you sent off the discussion in the wrong direction. If you ask a technical question and use some unfamiliar notions in it, what do people tell you? Define these notions. Here you have not defined what you mean by proofs without words. | |
| Sep 5, 2018 at 20:57 | answer | added | Hans-Peter Stricker | timeline score: 33 | |
| Jul 19, 2018 at 18:24 | comment | added | Federico Poloni | Technically, ten pages full of formulas count as a "proof without words", right? | |
| Jul 19, 2018 at 17:07 | answer | added | Đào Thanh Oai | timeline score: 6 | |
| Jun 28, 2018 at 6:39 | comment | added | Eliethesaiyan | i think having both would be a plus...visuals would help concretize the idea that might be hard to grasp from the "well-chosen words" | |
| Dec 24, 2017 at 3:46 | comment | added | Daniel Charry | Unfortunately i don't have enough reputation to submit upload.wikimedia.org/wikipedia/commons/8/8b/… | |
| Nov 29, 2017 at 17:48 | answer | added | Vaughn Climenhaga | timeline score: 8 | |
| Oct 23, 2017 at 13:19 | answer | added | Peter McNamara | timeline score: 7 | |
| Oct 20, 2017 at 8:59 | answer | added | Turbo | timeline score: 14 | |
| Aug 3, 2017 at 13:39 | answer | added | assaferan | timeline score: 9 | |
| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Feb 17, 2017 at 7:44 | comment | added | Dan Dascalescu | Can someone with enough rep submit that 1/4 + (1/4)^2 + (1/4)^3 + ... = 1/3? | |
| Dec 29, 2016 at 21:16 | answer | added | Robin Saunders | timeline score: 48 | |
| Dec 15, 2016 at 12:59 | comment | added | DanielWainfleet | i recall that Mathematics Magazine, a more elementary cousin of mathematical Monthly (and also published by A.M.A.) used to have a fairly regular feature titled Proofs Without Words.... with some surprising pictures. | |
| Dec 4, 2016 at 13:40 | answer | added | Pietro Majer | timeline score: 10 | |
| Dec 4, 2016 at 8:57 | history | edited | Martin Sleziak |
added (slick-proof) tag - it seems suitable to me (if I am using this tag incorrectly, feel free to remove it)
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| Dec 4, 2016 at 8:06 | comment | added | Martin Sleziak | Some proofs without words can be found on Math.SE among posts tagged proof-without-words. | |
| Dec 4, 2016 at 6:28 | answer | added | მამუკა ჯიბლაძე | timeline score: 9 | |
| Dec 4, 2016 at 5:40 | answer | added | Steven Stadnicki | timeline score: 38 | |
| Jan 4, 2016 at 22:29 | comment | added | math137 | @WetSavannaAnimalakaRodVance I want to upvote your comment again and again... | |
| Nov 11, 2015 at 17:40 | answer | added | Guo Qi | timeline score: 9 | |
| Oct 28, 2015 at 6:51 | answer | added | L.Z. Wong | timeline score: 39 | |
| Aug 17, 2015 at 12:23 | answer | added | Bhaskar Vashishth | timeline score: 15 | |
| May 14, 2015 at 8:45 | answer | added | VividD | timeline score: 4 | |
| Jan 23, 2015 at 22:52 | comment | added | Mariano Suárez-Álvarez | If you cannot tell the difference between a proof-tree and a proof without words in the tradition of, say, the AMM Monthly, then that is clearly a limitation of yours. I would rather you start a meta thread, or a blog, instead of further polluting this thread with what is clearly rather orthogonal chatter. | |
| Jan 23, 2015 at 22:46 | comment | added | goblin GONE | Also, I am afraid you have misunderstood me. If I were to post a truth-tree for some logical tautology, well that would be a literal example of a "proof without words"; but, you would surely reject it as a non-example. Hence what you really mean is not "proof without words" but "proof without logic." | |
| Jan 23, 2015 at 22:45 | comment | added | goblin GONE | @MarianoSuárez-Alvarez, oh the concept is well-known alright; these useless so-called "proofs without words" are all over YouTube, usually paired with a lot of downvotes, and rightly so. Its sad that so much effort went into discovering these beautiful arguments, and then producing pictures and even animations to illustrate the idea, only to have all that hard work spoilt by this proof without words nonsense. How much better those so-called "proofs" would have been with a few premises, some inferences, and a conclusion. | |
| Jan 23, 2015 at 3:55 | comment | added | Mariano Suárez-Álvarez | @goblin, I am afraid that you have completely misunderstood the concept. The idea is pictures which have the rather amazing capability of immediately suggesting on the mind of the viewer the idea of a proof. How on earth you managed to get from the rather well-known idea involved in this question to «proofs without logic» is a mystery to me. | |
| Jan 23, 2015 at 3:14 | comment | added | goblin GONE | There is no such thing as a "proof without logic," and since words are usually the best tool for conveying logical relations, I'm going to have to reject the idea of "proof without words." Sorry, -1. | |
| Jan 23, 2015 at 1:10 | answer | added | Loreno Heer | timeline score: 7 | |
| Jan 23, 2015 at 0:51 | answer | added | Loreno Heer | timeline score: 9 | |
| Oct 7, 2014 at 23:47 | comment | added | user56097 | It is funny that most people understood "proof without words" as "proof with pictures only"; I guess it is not hard to find proof with computations only! (Though, these ones are in average less seducing...) By the way, do you have in mind other ways to "prove" things than words, pictures and computations? | |
| Oct 7, 2014 at 19:29 | answer | added | Thierry de la Rue | timeline score: 19 | |
| Sep 11, 2014 at 7:32 | history | edited | Mostafa Mirabi |
edited tags
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| Sep 11, 2014 at 7:24 | answer | added | Mostafa Mirabi | timeline score: -5 | |
| Sep 11, 2014 at 5:37 | answer | added | Zurab Silagadze | timeline score: 8 | |
| Jun 21, 2014 at 15:12 | comment | added | matovitch | I can't post since I do not have enough rep (and I probably won't ever have as I am not such a math guy) but I was surprised not to find the proof of pythagorean theorem through similar triangles (by far my favourite) : is.gd/dLjpjQ. | |
| Apr 19, 2014 at 14:12 | answer | added | Zurab Silagadze | timeline score: 132 | |
| Mar 19, 2014 at 12:11 | answer | added | Campello | timeline score: 33 | |
| Oct 11, 2013 at 0:57 | history | reopened | Kim Morrison | ||
| Oct 11, 2013 at 0:51 | history | protected | Kim Morrison | ||
| Sep 10, 2013 at 13:01 | review | Reopen votes | |||
| Sep 10, 2013 at 13:05 | |||||
| Sep 9, 2013 at 12:58 | review | Reopen votes | |||
| Sep 9, 2013 at 13:06 | |||||
| Mar 15, 2013 at 17:53 | comment | added | Hans-Peter Stricker | Why has this question been closed? How can it be "no longer relevant"? (I mean: the longer people contribute examples, the better.) (BTW: I do have an astonishing example.) | |
| Aug 21, 2012 at 1:54 | history | closed |
Suvrit Mark Meckes user6976 Felipe Voloch Mariano Suárez-Álvarez |
no longer relevant | |
| Aug 21, 2012 at 1:28 | answer | added | Marc Chamberland | timeline score: -9 | |
| Aug 20, 2012 at 22:39 | answer | added | Marc Chamberland | timeline score: 11 | |
| Aug 16, 2012 at 22:01 | answer | added | Jon Cohen | timeline score: 11 | |
| May 29, 2012 at 22:27 | answer | added | O.R. | timeline score: 24 | |
| Feb 16, 2012 at 3:28 | comment | added | Roberto Mizzoni | @one eyed and blind in one eye people curious about autostereograms: i39.tinypic.com/14nzlt0.gif [animated gif based on en.wikipedia.org/wiki/File:Stereogram_Tut_Random_Dot_Shark.png, licensed CC BY-SA 3.0] | |
| Feb 15, 2012 at 0:00 | answer | added | Roberto Mizzoni | timeline score: 2 | |
| Feb 12, 2012 at 0:47 | comment | added | Joel David Hamkins | My opinion is that almost every proof-without-words is improved by a few well-chosen words. | |
| Nov 8, 2011 at 9:33 | answer | added | Martin Brandenburg | timeline score: 11 | |
| Oct 1, 2011 at 23:31 | answer | added | isomorphismes | timeline score: 2 | |
| Sep 16, 2011 at 23:30 | comment | added | David Roberts♦ | @Mariano - ok. Just a thought. Other 'borderline' (read: not particularly research-level) big-list questions that have been extremely popular are slowly getting closed, but if this one is still getting good answers, then good. | |
| Sep 16, 2011 at 17:34 | comment | added | Mariano Suárez-Álvarez | I am actually quite fond of this question, David! I tend to make comments on answers that are not relevant, and they have a tendency to get deleted after that. | |
| Sep 16, 2011 at 4:03 | comment | added | David Roberts♦ | Can we close this as being no longer relevant? The answers trickling in now are not really proofs without words. | |
| Sep 16, 2011 at 3:19 | answer | added | euklid345 | timeline score: 3 | |
| Sep 16, 2011 at 3:05 | answer | added | sclv | timeline score: 22 | |
| Aug 26, 2011 at 11:34 | comment | added | Gil Kalai | This question gives Mariano the sixth and seventh golden badges!! Congratulations!! | |
| Aug 16, 2011 at 6:45 | answer | added | Ron Maimon | timeline score: 10 | |
| Jul 9, 2011 at 18:40 | comment | added | Suvrit | @Rod Vance -- I'm sure you are not alone; I think my difficulty with "pictures" lies in my lack of geometric abilities. | |
| Jul 9, 2011 at 12:13 | comment | added | Selene Routley | @Mariano - sorry, I'm blind in one eye, so I never did get those autostereograms. Great question, though! | |
| Jul 9, 2011 at 12:11 | comment | added | Selene Routley | @Suvrit: I hope I am not alone in being most often unable to appreciate "proof by word" until I've read it at least twenty times and wrestled with it for many days per page! | |
| Jul 8, 2011 at 21:49 | answer | added | Phil Isett | timeline score: 3 | |
| Jul 8, 2011 at 21:14 | comment | added | Suvrit | I hope I am not alone in being (usually) unable to appreciate "proof by picture"... | |
| Jul 7, 2011 at 23:25 | answer | added | JeremyKun | timeline score: 88 | |
| Jul 6, 2011 at 0:39 | answer | added | JeremyKun | timeline score: 8 | |
| Jun 28, 2011 at 16:46 | answer | added | Jesko Hüttenhain | timeline score: 4 | |
| Jun 28, 2011 at 14:42 | answer | added | leonbloy | timeline score: 24 | |
| Apr 10, 2011 at 16:57 | answer | added | Marco Golla | timeline score: 75 | |
| Apr 10, 2011 at 15:54 | answer | added | user11235 | timeline score: 3 | |
| Mar 15, 2011 at 22:02 | answer | added | Chris Heunen | timeline score: 44 | |
| Feb 7, 2011 at 4:01 | answer | added | Bob Palais | timeline score: 3 | |
| Feb 7, 2011 at 1:27 | answer | added | Daniel Parry | timeline score: 126 | |
| Dec 28, 2010 at 2:42 | answer | added | user11863 | timeline score: 1 | |
| Sep 27, 2010 at 15:36 | answer | added | AndrewLMarshall | timeline score: 61 | |
| Sep 14, 2010 at 8:24 | answer | added | Alexis Monnerot-Dumaine | timeline score: 38 | |
| Sep 14, 2010 at 7:44 | answer | added | muad | timeline score: 110 | |
| Aug 7, 2010 at 3:37 | answer | added | Thierry Zell | timeline score: 16 | |
| Jul 14, 2010 at 22:15 | answer | added | Daniel Miller | timeline score: 7 | |
| Jul 11, 2010 at 15:21 | history | edited | François G. Dorais |
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| Jul 11, 2010 at 15:11 | answer | added | O.R. | timeline score: 7 | |
| Jul 7, 2010 at 1:01 | history | edited | Jose Brox |
Retagged
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| Jun 25, 2010 at 2:45 | answer | added | BlueRaja | timeline score: 25 | |
| May 20, 2010 at 1:27 | answer | added | Vaughn Climenhaga | timeline score: 140 | |
| May 15, 2010 at 22:32 | answer | added | Dave Pritchard | timeline score: 96 | |
| May 15, 2010 at 16:40 | answer | added | Vaughn Climenhaga | timeline score: 21 | |
| Mar 25, 2010 at 19:00 | answer | added | muad | timeline score: 78 | |
| Mar 25, 2010 at 18:11 | answer | added | Chris Conway | timeline score: 6 | |
| Mar 7, 2010 at 11:01 | answer | added | Kumar | timeline score: 7 | |
| Mar 7, 2010 at 2:16 | answer | added | Russell O'Connor | timeline score: 246 | |
| Mar 6, 2010 at 23:18 | answer | added | shreevatsa | timeline score: 196 | |
| Mar 6, 2010 at 21:55 | answer | added | Tobias Hagge | timeline score: 9 | |
| Mar 5, 2010 at 16:59 | answer | added | Sunni | timeline score: 7 | |
| Feb 22, 2010 at 15:25 | answer | added | CuriousUser | timeline score: 55 | |
| Jan 16, 2010 at 21:42 | answer | added | serargus | timeline score: 188 | |
| Jan 15, 2010 at 16:31 | answer | added | vonjd | timeline score: 13 | |
| Dec 22, 2009 at 16:54 | answer | added | aorq | timeline score: 107 | |
| Dec 19, 2009 at 17:45 | answer | added | Gil Kalai | timeline score: 18 | |
| Dec 16, 2009 at 11:32 | answer | added | Igor Khavkine | timeline score: 80 | |
| Dec 15, 2009 at 3:27 | history | edited | Reid Barton |
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| Dec 15, 2009 at 2:32 | answer | added | Darsh Ranjan | timeline score: 70 | |
| Dec 15, 2009 at 1:52 | answer | added | Ian Agol | timeline score: 42 | |
| Dec 15, 2009 at 1:31 | answer | added | Steven Gubkin | timeline score: 59 | |
| Dec 15, 2009 at 0:19 | answer | added | Aaron Mazel-Gee | timeline score: 5 | |
| Dec 14, 2009 at 23:57 | comment | added | Carter Tazio Schonwald | where possible could people also either note the image source or explain/provide a link to a "how to" for constructing the associated diagram? I think that such would also be helpful for folks` | |
| Dec 14, 2009 at 16:08 | answer | added | Harrison Brown | timeline score: 115 | |
| Dec 14, 2009 at 15:50 | answer | added | Jason Dyer | timeline score: 215 | |
| Dec 14, 2009 at 15:35 | answer | added | Steve Flammia | timeline score: 85 | |
| Dec 14, 2009 at 8:05 | answer | added | Alon Amit | timeline score: 24 | |
| Dec 14, 2009 at 7:53 | answer | added | Alon Amit | timeline score: 26 | |
| Dec 14, 2009 at 7:05 | answer | added | David Lehavi | timeline score: 11 | |
| Dec 14, 2009 at 6:29 | answer | added | Mike | timeline score: 155 | |
| Dec 14, 2009 at 6:21 | history | made wiki | Post Made Community Wiki by Mariano Suárez-Álvarez | ||
| Dec 14, 2009 at 6:13 | answer | added | Mike | timeline score: 31 | |
| Dec 14, 2009 at 6:05 | answer | added | Mariano Suárez-Álvarez | timeline score: 561 | |
| Dec 14, 2009 at 6:04 | history | asked | Mariano Suárez-Álvarez | CC BY-SA 2.5 |
