文件名称：conway.pdf
文件大小：167KB
文件格式：PDF
更新时间：2010-03-19 08:37:41
conway math
The Angel Problem JOHN H. CONWAY Abstract. Can the Devil, who removes one square per move from an in- nite chessboard, strand the Angel, who can jump up to 1000 squares per move? It seems unlikely, but the answer is unknown. Andreas Blass and I have proved that the Devil can strand an Angel who\'s handicapped in one of several ways. I end with a challenge for the solution the general problem.