本帖最后由 deducemath 于 2011-4-25 20:52 编辑
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回复 babyblue0328 的帖子, x* J& O$ L1 [3 i* G/ O8 V' j
M; b q7 Z# M$ O2 M! g2 B8 N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:6 r9 ]8 F6 C( o
Adventure Games, Permutations, and Spreadsheets- |3 H% E/ o _% t
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References5 H. t# {8 g$ k: Q
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G. Birkhoff and S. MacLane, A Survey of Modern Algebra, revised edition, The MacMillan Company, New York, 1953./ a; L0 L; _/ |% D# R, S
I. N. Herstein, Topics in Algebra, 2nd edition, John Wiley & Sons, Inc., New York, 1975. d% p2 W9 v# I
E. Spitznagel, Jr., A New Look at the Fifteen Puzzle, Mathematics Magazine, Vol. 40 (1967) 171-174.* _7 ~7 L3 z" m9 N# V9 \ h
S.K. Stein, Mathematics: The Man-Made Universe, W.H. Freeman and Company, New York, 1976, Third Edition.+ ~$ |* r$ a$ z
R.M. Wilson, Graph Puzzles, Homotopy, and the Alternating Group, Journal of Combinatorial Theory (B) 16 (1974) 86-96." U3 R( ~, {% a4 H
; z$ u$ v0 I( ~$ L' dAcknowledgment. I would like to thank my good friend George Mackiw for his encouragement and support in writing this article. |