本帖最后由 deducemath 于 2011-4-25 20:52 编辑
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关于 2、战栗(Shivers) ,网上有篇妙文详细分析游戏中的一个谜题。原始链接已损坏,还好我几年前将网页保存下来。下面跟大家共享:
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4 v0 P" I* _: P" t/ sG. Birkhoff and S. MacLane, A Survey of Modern Algebra, revised edition, The MacMillan Company, New York, 1953.( l: a2 @' E6 x0 X. C6 c
I. N. Herstein, Topics in Algebra, 2nd edition, John Wiley & Sons, Inc., New York, 1975.
$ D/ B% u6 U) {' G* c# nE. Spitznagel, Jr., A New Look at the Fifteen Puzzle, Mathematics Magazine, Vol. 40 (1967) 171-174.
) Z4 ?! J; T; q2 }2 VS.K. Stein, Mathematics: The Man-Made Universe, W.H. Freeman and Company, New York, 1976, Third Edition.! o! W/ `' u* O* h s5 Z
R.M. Wilson, Graph Puzzles, Homotopy, and the Alternating Group, Journal of Combinatorial Theory (B) 16 (1974) 86-96.
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Acknowledgment. I would like to thank my good friend George Mackiw for his encouragement and support in writing this article. |