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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
246 · 320 · 59 · 76 · 112 · 133 · 17 · 19 · 23 · 29 · 31 · 41 · 47 · 59 · 71
= 808,017,424,794,512,875,886,459,904,961,710,757,005,754,368,000,000,000
≈ 8×1053.
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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.
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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.