本帖最后由 deducemath 于 2011-4-25 20:52 编辑
2 x* E+ M7 Z8 l6 r5 |) e3 v5 O) `# d* L+ x
回复 babyblue0328 的帖子, a/ B. q; K+ @& h1 s
- P' t5 ?' O7 \9 E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:9 @1 L4 U# O( \% E$ s& z
Adventure Games, Permutations, and Spreadsheets$ ^1 A( l! \# S- g* B* [
. O3 i N0 C( O# d0 z
5 x5 h4 }/ b9 W8 ^2 Y+ t3 G9 t
: f; x, w2 e, M# E6 u4 a' i
; _0 w. M' V& `' m# {; K
6 o, ~: x" N# ?1 }# D3 T4 r8 Z7 e: y+ O
8 w9 z# D2 `0 A2 g: Y0 d! k9 Z8 B- }* O, Y* ]* ]8 N8 @6 J6 D7 m$ H W
References! A7 R+ j) F# r1 F: m
% l& v5 `, w% J0 t% F2 X* U6 oG. Birkhoff and S. MacLane, A Survey of Modern Algebra, revised edition, The MacMillan Company, New York, 1953.
, R4 E# j# \; _& GI. N. Herstein, Topics in Algebra, 2nd edition, John Wiley & Sons, Inc., New York, 1975.
' C+ L' c0 |9 q9 I7 VE. Spitznagel, Jr., A New Look at the Fifteen Puzzle, Mathematics Magazine, Vol. 40 (1967) 171-174.# v8 r2 m" U3 k% N& R" d* c9 _
S.K. Stein, Mathematics: The Man-Made Universe, W.H. Freeman and Company, New York, 1976, Third Edition.
2 l' P1 _# z O1 }! J, h0 ?% D+ ~* yR.M. Wilson, Graph Puzzles, Homotopy, and the Alternating Group, Journal of Combinatorial Theory (B) 16 (1974) 86-96.9 j: W' T& o! a$ x
: u R7 {/ q; f( ~
Acknowledgment. I would like to thank my good friend George Mackiw for his encouragement and support in writing this article. |