本帖最后由 deducemath 于 2011-4-25 20:52 编辑
+ s% c" ^" H8 p, {( ?) d; c8 J% ^) ~# ]7 J5 E. A) j$ u
回复 babyblue0328 的帖子
+ f* j1 |4 c8 @: [' J9 P# O$ A1 F5 x. d, c
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:+ j. i: A) ^5 _" a( D# N2 I
Adventure Games, Permutations, and Spreadsheets, l5 d1 ?3 ~6 Z- r' v( t
. |' w& A5 d* h; l, T3 H R0 H& p, s! ?! r3 a6 }- D
6 c9 R4 z! q5 h5 h/ i6 V# V
/ {5 G: E1 B- u* k
4 Q" n4 J7 q% h4 a6 N" q( M) |" {, Y# V7 q2 i3 T. G
+ E$ ?5 y2 I$ D0 i' a6 t k. E; _. v8 k7 R; M
3 f$ ]; h, u) ]' n2 c; h8 sReferences6 }; Q) P# n" Z7 ^
- X! K: s3 S4 L8 r
G. Birkhoff and S. MacLane, A Survey of Modern Algebra, revised edition, The MacMillan Company, New York, 1953.
1 g4 I9 [3 ~) n" O3 q. A& iI. N. Herstein, Topics in Algebra, 2nd edition, John Wiley & Sons, Inc., New York, 1975.& X- M3 D: v G4 |9 w
E. Spitznagel, Jr., A New Look at the Fifteen Puzzle, Mathematics Magazine, Vol. 40 (1967) 171-174.0 Q. v6 T) K- a( u X
S.K. Stein, Mathematics: The Man-Made Universe, W.H. Freeman and Company, New York, 1976, Third Edition.
+ }& h4 P- S& I+ x8 P( SR.M. Wilson, Graph Puzzles, Homotopy, and the Alternating Group, Journal of Combinatorial Theory (B) 16 (1974) 86-96.
1 S6 _1 z" \& @% N: R K9 O ! O+ K; |. f. c4 H" w& _
Acknowledgment. I would like to thank my good friend George Mackiw for his encouragement and support in writing this article. |