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回复 babyblue0328 的帖子5 j( t5 v; {( A6 k9 j1 o$ j
3 ^ \+ t! n* x+ T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:8 g# U3 U4 _ P
Adventure Games, Permutations, and Spreadsheets, M& o( n8 N( B8 @; z7 t# c2 B
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G. Birkhoff and S. MacLane, A Survey of Modern Algebra, revised edition, The MacMillan Company, New York, 1953.
+ ^" W, _* `1 ~I. N. Herstein, Topics in Algebra, 2nd edition, John Wiley & Sons, Inc., New York, 1975.
5 k6 A: c, }7 _- X( VE. Spitznagel, Jr., A New Look at the Fifteen Puzzle, Mathematics Magazine, Vol. 40 (1967) 171-174.
! `+ g7 E! V0 ?7 s( T" J7 I. P+ y* pS.K. Stein, Mathematics: The Man-Made Universe, W.H. Freeman and Company, New York, 1976, Third Edition.) K- o1 N. g( X. V3 [
R.M. Wilson, Graph Puzzles, Homotopy, and the Alternating Group, Journal of Combinatorial Theory (B) 16 (1974) 86-96.4 W& S; E) }3 z
( A7 n) N6 s2 W/ X6 _3 T# @Acknowledgment. I would like to thank my good friend George Mackiw for his encouragement and support in writing this article. |