Approximate symmetry of a nonlinear heat equation (Q1177743)
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scientific article; zbMATH DE number 21067
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Approximate symmetry of a nonlinear heat equation |
scientific article; zbMATH DE number 21067 |
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Approximate symmetry of a nonlinear heat equation (English)
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26 June 1992
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A multidimensional heat equation \((\partial u/\partial t)+(\partial/\partial x_ a)\{(1+\varepsilon g(u))\partial u/\partial x_ a\}=0\) is considered and assumptions, which assure the Galilean symmetry of the first and second order, are given together with basis elements of the corresponding Galilean algebras.
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methods of asymptotics
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Galilean symmetry of the first and second order
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