7.3 infinitesimal description
7.3.1 approximate lie equations
7.3.2 approximate exponential map
exercises to chapter 7
8 approximate symmetries
8.1 definition of approximate symmetries
8.2 calculation of approximate symmetries
8.2.1 determining equations
8.2.2 stable symmetries
8.2.3 algorithm for calculation
8.3.2 approximate commutator and lie algebras
9.1 integration of equations with a smallparameter usingapproximatesymmetries
9.1.1 equation having no exact point symmetries
9.1.2 utilization of stable symmetries
9.2 approximately invariant solutions
9.2.1 nonlinear wave equation
9.2.2 approximate travelling waves of kdv equation
9.3 approximate conservation laws
exercises to chapter 9
assignment to part ii
bibliography
index

变换群和李代数 作者简介

　　伊布拉基莫夫（Ibragimov，N.H.）教授为瑞士科学家，被公认为是在微分方程对称分析方面世界上最具权威的专家之一。他发起并构建了现代群分析理论，并推动了该理论在多方面的应用。

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