ばいちょ(売価調査)、価格比較とネットでのお買い物を楽に

内容説明 This text discusses Lie groups of transformations and basic symmetry methods for solving ordinary and partial differential equations. It places emphasis on explicit computational algorithms to discover symmetries admitted by differential equations and to construct solutions resulting from symmetries. This new edition covers contact transformations， Lie-B cklund transformations， and adjoints and integrating factors for ODEs of arbitrary order.