| 词条 | Lee Sallows |
| 释义 |
| name = Lee Sallows | image = File:Lee Sallows.jpg | image_size = 240px | caption = | alt = | birth_date = {{b-da|April 30, 1944}} | birth_place = Welwyn, Hertfordshire | death_date = | death_place = | residence = Nijmegen, The Netherlands | citizenship = | nationality = English | fields = Recreational mathematics | workplaces = | alma_mater = | doctoral_advisor = | academic_advisors = | doctoral_students = | notable_students = | known_for = Golygons Alphamagic squares Geometric magic squares Self-tiling tile sets Self-enumerating sentences | author_abbrev_bot = | author_abbrev_zoo = | influences = | influenced = | awards = | signature = | signature_alt = | footnotes = }} Lee Cecil Fletcher Sallows (born April 30, 1944) is a British electronics engineer known for his contributions to recreational mathematics. He is particularly noted as the inventor of golygons, self-enumerating sentences, and geomagic squares. Recreational mathematicsSallows is an expert on the theory of magic squares[1] and has invented several variations on them, including alphamagic squares[2][3] and geomagic squares.[4] The latter invention caught the attention of mathematician Peter Cameron who has said that he believes that "an even deeper structure may lie hidden beyond geomagic squares"[5] In "The lost theorem" published in 1997 he showed that every 3 × 3 magic square is associated with a unique parallelogram on the complex plane, a discovery that had escaped all previous researchers from ancient times down to the present day.[6] In 2014 Sallows discovered a previously unnoticed result involving the medians of a triangle.[7]A golygon is a polygon containing only right angles, such that adjacent sides exhibit consecutive integer lengths. Golygons were invented and named by Sallows[8] and introduced by A.K. Dewdney in the Computer Recreations column of the July 1990 issue of Scientific American.[9] In 2012 Sallows invented and named self-tiling tile sets—a new generalization of rep-tiles.[10] Personal lifeLee Sallows is the only son of Florence Eliza Fletcher and Leonard Gandy Sallows. He was born on 30 April 1944 at Brocket Hall in Hertfordshire, England, and grew up in the district of Upper Clapton in northeast London. Sallows attended Dame Alice Owen's School, then located at The Angel, Islington, but failed to settle in and was without diplomas when he left at age 17. Knowledge gained via interest in short-wave radio enabled him to find work as a technician within the electronics industry. In 1970 he moved to Nijmegen in the Netherlands, where until 2009, he worked as an electronic engineer at Radboud University. In 1973 Sallows met up with his Dutch partner Evert Lamfers, a cardiologist[11], with whom he has lived ever since. {{clear}}Bibliography
References1. ^Magic Square Update-2009, September 6, 2009 2. ^alphamagic square, Encyclopedia of Science 3. ^excerpt from Word Play by Martin Gardner 4. ^[https://www.theguardian.com/science/2011/apr/03/magic-squares-geomagic-lee-sallows Magic squares are given a whole new dimension], The Observer, April 3, 2011 5. ^[https://www.newscientist.com/article/dn20017#.UfgkFWTXhXc Ancient puzzle gets new lease of 'geomagical' life], New Scientist, January 24, 2011 6. ^[https://link.springer.com/article/10.1007%2FBF03024415#page-1 The lost theorem ] In The Mathematical Intelligencer, Fall 1997, Vol 19, Issue 4, pp 51-54 7. ^Sallows, Lee, "[https://www.jstor.org/stable/10.4169/math.mag.87.5.381 A Triangle Theorem]" Mathematics Magazine, Vol. 87, No. 5 (December 2014), p. 381 8. ^[https://www.jstor.org/pss/2690648 Serial isogons of 90 degrees], by Lee Sallows, Martin Gardner, Richard Guy, and Donald Knuth, Mathematics Magazine, Vol. 64, No. 5, December, 1991 9. ^{{cite web|url=http://geocities.com/hjsmithh/Golygons/GolyWhat.html |title=What is a Golygon? |accessdate=2010-10-08 |deadurl=bot: unknown |archiveurl=https://web.archive.org/web/20091027155427/http://geocities.com/hjsmithh/Golygons/GolyWhat.html |archivedate=October 27, 2009 |df= }} 10. ^[https://www.jstor.org/discover/10.4169/math.mag.85.5.323?uid=3739776&uid=2&uid=4&uid=3739256&sid=21102332189497 On Self-Tiling Tile Sets], by Lee Sallows,, Mathematics Magazine, Vol. 85, No. 5, December 2012 11. ^[https://www.cwz.nl/over-cwz/nieuws-en-pers/nieuwsoverzicht/afscheid-van-cardioloog-evert-lamfers-ik-rolde-van-het-ene-in-het-andere/ Farewell to cardiologist Evert Lamfers] External links
7 : Recreational mathematicians|Mathematics popularizers|Combinatorial game theorists|Magic squares|People from Nijmegen|1944 births|Living people |
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