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arXiv 0904.4557math.APmath.SG
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关于Hamilton-Jacobi方程的C^0-变分解

On C^0-variational solutions for Hamilton-Jacobi equations

Olga Bernardi, Franco Cardin

摘要:

对于发展型Hamilton-Jacobi方程,我们给出了一个改进的C^0-变分解的定义,适用于初值连续的Cauchy问题。在这个较弱的框架下,我们研究了这些解的马尔可夫(或半群)性质。在p-凸Hamilton算子的情况下,当变分解与黏性解相同时,我们利用极小极大技巧直接验证了马尔可夫性质.在非凸的情况下,我们构造了一个显式的进化的例子,极小极大和粘性的解决方案是不同的。假设初始数据允许分离变量,我们还检测到马尔可夫性质的凹凸哈密尔顿。在这种情况下,对于一般的初始数据,我们最终给出了变分解的上、下霍普夫型估计。

英文摘要:

For evolutive Hamilton-Jacobi equations, we propose a refined definition of C^0-variational solution, adapted to Cauchy problems for continuous initial data. In this weaker framework we investigate the Markovian (or semigroup) property for these solutions. In the case of p-convex Hamiltonians, when variational solutions are known to be identical to viscosity solutions, we verify directly the Markovian property by using minmax techniques. In the non-convex case, we construct an explicit evolutive example where minmax and viscous solutions are different. Provided the initial data allow for the separation of variables, we also detect the Markovian property for convex-concave Hamiltonians. In this case, and for general initial data, we finally give upper and lower Hopf-type estimates for the variational solutions.

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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