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arXiv 2410.04597math.APmath-phmath.MP
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非严格双曲系统及其在Euler-Poisson方程研究中的应用

Nonstrictly hyperbolic systems and their application to study of Euler-Poisson equations

Marko K. Turzynsky

AI总结:

该研究针对作为一维Euler-Poisson方程形式推广的二元非齐次非严格双曲系统,完成解的行为分类、奇异性判据推导等工作,并将结果应用于Euler-Poisson方程的模型研究。

摘要:

我们研究由两个方程构成的非齐次非严格双曲系统,它是经变换的一维Euler-Poisson方程的形式推广。针对这类系统,我们依据右端项对解的行为进行了完整分类。特别地,我们找到了用初值表示的、柯西问题解中奇异性形成的判据。我们还确定了导数扩展系统平衡点的吸引域,证明了简单波形式解的存在性。所得结果被应用于研究Euler-Poisson方程的主要模型情形。

英文摘要:

We study inhomogeneous non-strictly hyperbolic systems of two equations, which are a formal generalization of the transformed one-dimensional Euler-Poisson equations. For such systems, a complete classification of the behavior of the solution is carried out depending on the right side. In particular, criteria for the formation of singularities in the solution of the Cauchy problem in terms of initial data are found. Also we determine the domains of attraction of equilibria of the extended system for derivatives. We prove the existence of solutions in the form of simple waves. The results obtained are applied to study the main model cases of the Euler-Poisson equations.

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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