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Second-Order Conditional Lie-Bäcklund Symmetry and Differential Constraint of Radially Symmetric Diffusion System

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  • Jianping Wang
  • Huijing Ba
  • Yaru Liu
  • Longqi He
  • Lina Ji

Abstract

The classifications and reductions of radially symmetric diffusion system are studied due to the conditional Lie-Bäcklund symmetry method. We obtain the invariant condition, which is the so-called determining system and under which the radially symmetric diffusion system admits second-order conditional Lie-Bäcklund symmetries. The governing systems and the admitted second-order conditional Lie-Bäcklund symmetries are identified by solving the nonlinear determining system. Exact solutions of the resulting systems are constructed due to the compatibility of the original system and the admitted differential constraint corresponding to the invariant surface condition. For most of the cases, they are reduced to solving four-dimensional dynamical systems.

Suggested Citation

  • Jianping Wang & Huijing Ba & Yaru Liu & Longqi He & Lina Ji, 2021. "Second-Order Conditional Lie-Bäcklund Symmetry and Differential Constraint of Radially Symmetric Diffusion System," Advances in Mathematical Physics, Hindawi, vol. 2021, pages 1-17, January.
    • Handle: RePEc:hin:jnlamp:8891750
    DOI: 10.1155/2021/8891750
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