arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.00779math-phmath.MP
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偏微分方程伴随对称的几何表述

Geometrical formulation for adjoint-symmetries of partial differential equations

Stephen C. Anco, Bao Wang

摘要:

研究了一般偏微分方程伴随对称的1-形式的几何表述,给出了偏微分方程解空间上切向量场对称的几何意义的对偶对应.这个配方的两个应用。此外,对于系统的发展方程,伴随对称性示出了另一个几何公式给出的1-形式,是不变的流动下产生的系统的解决方案空间。这一结果被推广到系统的发展方程与空间约束,伴随对称1-形式被证明是不变的一个正常的1-形式相关联的约束方程的功能乘子。所得结果适用于应用数学和数学物理中感兴趣的偏微分方程系统。

英文摘要:

A geometrical formulation for adjoint-symmetries as 1-forms is studied for general partial differential equations (PDEs), which provides a dual counterpart of the geometrical meaning of symmetries as tangent vector fields on the solution space of a PDE. Two applications of this formulation are presented. Additionally, for systems of evolution equations, adjoint-symmetries are shown to have another geometrical formulation given by 1-forms that are invariant under the flow generated by the system on the solution space. This result is generalized to systems of evolution equations with spatial constraints, where adjoint-symmetry 1-forms are shown to be invariant up to a functional multiplier of a normal 1-form associated to the constraint equations. All of the results are applicable to the PDE systems of interest in applied mathematics and mathematical physics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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