Revision as of 00:01, 12 March 2020 edit Lowercase sigmabot III (talk \| contribs) Bots, Page movers 2,449,404 edits m Archiving 1 discussion(s) to Talk:Brouwer fixed-point theorem/Archive 1) (bot ← Previous edit		Revision as of 01:06, 8 May 2020 edit undo Natkuhn (talk \| contribs) 129 edits →Highly skeptical that the remarks "said to have [been] added" by Brouwer are actually due to him: new section Next edit →
Line 50: :It doesn't claim (nor is it required) that the function is [[surjective]], so what's there is correct and appropriate. The example could have even arranged for a bijection, but I don't think it matters much either way. –[[User:Deacon Vorbis\|Deacon Vorbis]] ([[User Talk:Deacon Vorbis\|carbon]] • [[Special:Contributions/Deacon Vorbis\|videos]]) 00:32, 11 March 2020 (UTC) == Highly skeptical that the remarks "said to have [been] added" by Brouwer are actually due to him == <blockquote>Brouwer is said to have added: "I can formulate this splendid result different, I take a horizontal sheet, and another identical one which I crumple, flatten and place on the other. Then a point of the crumpled sheet is in the same place as on the other sheet."</blockquote> The citation is apparently from a French-language educational TV show (https://archive.is/20130113210953/http://archives.arte.tv/hebdo/archimed/19990921/ftext/sujet5.html). The remarks appear to be spoken by a fictional Brouwer trying to explain his result. The web page that this refers to gives no citation. I would like to know who originally came up with the "crumpled paper theorem" explanation of the BFPT. It could have been Brouwer himself, but my guess is it was not.

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