About YAMAGUCHI Y
About Teikyo Heisei Univ., Ichihara, JPN
About TANIKAWA K
About National Astronomical Observatory, Mitaka, JPN
About Progress of Theoretical Physics
About dynamical system
About standard map
About Classical mechanics
About 標準写像
About 軌道
About 順序付け
About トポロジー
About エントロピー