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John Horton Conway was an English mathematician active in the theory of finite groups, knot theory, number theory, combinatorial game theory and coding theory. He also made contributions to many branches of recreational mathematics, most notably the invention of the cellular automaton called the Game of Life.
In the area of abstract algebra known as group theory, the monster group M (also known as the Fischer–Griess monster, or the friendly giant) is the largest sporadic simple group, having order
808,017,424,794,512,875,886,459,904,961,710,757,005,754,368,000,000,000
= 246 · 320 · 59 · 76 · 112 · 133 · 17 · 19 · 23 · 29 · 31 · 41 · 47 · 59 · 71
≈ 8×1053.
Bulimia nervosa, also known as simply bulimia, is an eating disorder characterized by binge eating followed by purging or fasting, and excessive concern with body shape and weight. This activity aims to expel the body of calories eaten from the binging phase of the process. Binge eating refers to eating a large amount of food in a short amount of time. Purging refers to the attempts to get rid of the food consumed. This may be done by vomiting or taking laxatives.
The year 1911 in science and technology involved some significant events, listed below.
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In mathematics, monstrous moonshine, or moonshine theory, is the unexpected connection between the monster group M and modular functions, in particular, the j function. The initial numerical observation was made by John McKay in 1978, and the phrase was coined by John Conway and Simon P. Norton in 1979.
Gerald Francis Morris Russell was a British psychiatrist. In 1979 he published one of the first descriptions of bulimia nervosa, and Russell's sign has been named after him.
The 1851 Research Fellowship is a scheme conducted by the Royal Commission for the Exhibition of 1851 to annually award a three-year research scholarship to approximately eight "young scientists or engineers of exceptional promise". The fellowship is open to all nationalities and fields of science, including physical or biological sciences, mathematics, applied science, and any branch of engineering. The fellowship can be held anywhere in the United Kingdom.
References
- ↑ Conway, J. H.; Norton, S. P. (1979). "Monstrous Moonshine". Bulletin of the London Mathematical Society. 11 (3): 308–339. doi:10.1112/blms/11.3.308.
- ↑ Pegg, Ed Jr. (2005-09-15). "Ed Pegg Jr.'s Math Games: Sudoku Variations". MAA Online. The Mathematical Association of America . Retrieved 2006-10-03.
- ↑ Russell, Gerald (August 1979). "Bulimia nervosa: an ominous variant of anorexia nervosa". Psychological Medicine . 9 (3): 429–48. doi:10.1017/S0033291700031974. PMID 482466. S2CID 23973384.
- ↑ Palmer, Robert (December 2004). "Bulimia nervosa: 25 years on". British Journal of Psychiatry . 185 (6): 447–8. doi: 10.1192/bjp.185.6.447 . PMID 15572732.
- ↑ "Smallpox". WHO Factsheet. Archived from the original on 2007-09-21. Retrieved 2007-09-22.
- ↑ The Biographical Encyclopedia of Astronomers. New York: Springer. 2007. ISBN 9780387304007.