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[期刊论文] 作者：QUChang-Zheng,
来源：理论物理通讯：英文版 年份：2005
It is shown that the Pinney equation, Ermakov systems, and their higher-order generalizations describeself-similar solutions of plane curve motions in centro-af...
[期刊论文] 作者：QUChang－Zheng,
来源：理论物理通讯：英文版 年份：2003
Group-invariant solutions to certain plane curve motions in Euclidean and centro-affine geometries areobtained. The behavior of some solutions is also presented...
Conditional Symmetry Groups of Nonlinear Diffusion Equations with x-Dependent Convection and Absorpt
[期刊论文] 作者：QUChang-Zheng ZHANGShun-Li,
来源：理论物理通讯：英文版 年份：2004
The generalized conditional symmetry and sign-invarinat approaches are developed to study the nonlinear diffusion equations with x-dependent convection and sour...
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