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The Shortest Research Paper Ever Published
- flywithdolp 7y agoIt's probably about what we did to stop the global warming so far
- megalawn 7y agoNumberphile did a video on short papers: https://www.youtube.com/watch?v=QvvkJT8myeI https://www.youtube.com/watch?v=QvvkJT8myeI
- Someone 7y ago”Euler proposed that the equation, a^n + b^n = c^n doesn’t hold true if the value of “n” is greater than “2”. Then in 1966, two mathematicians L.J. Lander and T.R. Parkin came along and swiftly overturned his claim with a counterexample: 27^5 + 84^5 + 110^5 + 133^5 = 144^5” That’s mixing Euler’s claim that you need to sum at least n n-th powers to get another n-th power (https://en.wikipedia.org/wiki/Euler%27s_sum_of_powers_conjecture https://en.wikipedia.org/wiki/Euler%27s_sum_of_powers_conjec...) with the (less general) Fermat’s last theorem (https://en.wikipedia.org/wiki/Fermat%27s_last_theorem https://en.wikipedia.org/wiki/Fermat%27s_last_theorem) The example in the paper disproved Euler’s conjecture, but did nothing about Fermat’s.
- astazangasta 7y ago>Euler proposed that the equation, an + bn = cn doesn’t hold true if the value of “n” is greater than “2”. This is wrong. That is Fermat's last theorem, which is true. Euler's conjecture is related but more general: >for all integers n and k greater than 1, if the sum of n kth powers of positive integers is itself a kth power, then n is greater than or equal to k: a1k + a2k + ... + ank = bk ⇒ n ≥ k
- hervature 7y agoLink to a previous post that talks about short papers - including this one. https://news.ycombinator.com/item?id=15737611 https://news.ycombinator.com/item?id=15737611
- hprotagonist 7y agoSee also Conway and Soifer, “ Can n^2+ 1 unit equilateral triangles cover an equilateral triangle of side > n,say n + ε?” American Mathematical Monthly (2005). which is two words and two figures. Annotated so that it’s understandable: https://fermatslibrary.com/s/shortest-paper-ever-published-in-a-serious-math-journal-john-conway-alexander-soifer https://fermatslibrary.com/s/shortest-paper-ever-published-i...
- andrepd 7y agoEuler proposed that the equation, a^n + b^n = c^n doesn’t hold true if the value of “n” is greater than “2”. Then two mathematicians came along and overturned his claim with a counterexample: 27^5 + 84^5 + 110^5 + 133^5 = 144^5 Is it me or there's something wrong with that paragraph? x)
- elcomet 7y agoIt's fun but not very interesting. A real research paper would explain the method they used to find this examples. Even only a few lines if the method is already known.
- dahart 7y ago“A direct search on the CDC 6600 yielded” That’s probably enough description of methodology for many people here to reproduce the results, right? :)
- mikeash 7y agoI wouldn’t even know where to start looking for a working CDC 6600.
- jfk13 7y agoSomeone's probably written an emulator in JavaScript, so you can just run it in your browser. :)
- pinewurst 7y agohttp://members.iinet.net.au/~tom-hunter/ http://members.iinet.net.au/~tom-hunter/ There's a C one. Truly though, it wouldn't be hard to just write a brute force checker for this in some reasonably efficient compiled language.
- dahart 7y agoI wouldn’t either. But I guess I don’t consider a CDC 6600 specifically to be critical to the methodology. I just meant that a lot of people around here could certainly write a computer program for direct search of the sum of four fourth power integers. It seems like this might even be one of the problems on Project Euler...?
- mikeash 7y agoI was just pretending to misunderstand as a joke. You did make me curious, though. The numbers are fairly small. I implemented the dumbest possible brute force search for all combinations of numbers 1-255. On my laptop, it found 133^5 + 110^5 + 84^5 + 27^5 = 144^5 in about 50 minutes. I'd guess that this laptop is something like 100,000 times faster than the CDC 6600, so that dumb search would have taken about a decade. However, you can get at least a couple orders of magnitude improvement with some simple improvements.
- sys_64738 7y agoHow do you discover these number in 1966?
- radioactivist 7y agoThere is a story in a similar spirit about showing that one of the supposed Mersenne primes (2^67-1) was in fact composite -- (probably apocryphally) by simply doing the arithmetic by hand on a blackboard during a talk. For more details, see: - https://en.wikipedia.org/wiki/Mersenne_prime https://en.wikipedia.org/wiki/Mersenne_prime - https://hsm.stackexchange.com/questions/2105/whats-the-famous-story-about-a-mathematician-who-gave-a-talk-without-saying-a-w/2106 https://hsm.stackexchange.com/questions/2105/whats-the-famou... - https://mathoverflow.net/questions/207321/how-did-cole-factor-267-1-in-1903 https://mathoverflow.net/questions/207321/how-did-cole-facto...
- Upvoter33 7y agosure, but the paper could have included the code ... :)
- jamesb93 7y agoThat's just poor research.
- selimthegrim 7y agoSurprised no one linked to this well-known preprint by Asher Peres. https://arxiv.org/abs/quant-ph/0310035 https://arxiv.org/abs/quant-ph/0310035
- marttt 7y agoHere's an even shorter one: Upper, Dennis. "The unsuccessful self-treatment of a case of “writer's block”." Journal of Applied Behavior Analysis 7.3 (1974): 497. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1311997/pdf/jaba00061-0143a.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1311997/pdf/jab...
- frosted-flakes 7y agoThe reviewer comment is hilarious: > COMMENTS BY REVIEWER A > I have studied this manuscript very carefully with lemon juice and X-rays and have not detected a single flaw in either design or writing style. I suggest it be published without revision. Clearly it is the most concise manuscript I have ever seen—yet it contains sufficient detail to allow other investigators to replicate Dr. Upper's failure. In comparison with the other manuscripts I get from you containing all that complicated detail, this one was a pleasure to examine. Surely we can find a place for this paper in the Journal—perhaps on the edge of a blank page.