非线性扩散方程的条件Lie-Backlund对称和符号不变量Sign-invariants and Conditional Lie-Bcklund Symmetries of the Nonlinear Diffusion Equations
姬利娜;郑群珍;
摘要(Abstract):
考虑了径向对称非线性扩散方程的条件Lie-Backlund对称和符号不变量.允许二阶条件Lie-Bcklund对称和一阶Hamilton-Jacobi型符号不变量的方程被确定给出,并由对称约化得到了方程的不变解.
关键词(KeyWords): 非线性扩散方程;条件Lie-Bcklund对称;符号不变量
基金项目(Foundation): 国家自然科学基金资助项目,编号U1204104
作者(Authors): 姬利娜;郑群珍;
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