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arXiv 2103.14966math.AP
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具有分数阶导数的混合型方程的Tricomi问题的证明。反问题

Analogue of the Tricomi problem for the mixed-type equation with fractional derivative. Inverse problems

R. R. Ashurov, R. T. Zunnunov

摘要:

在这项工作中,一个类似的Tricomi问题的混合型方程的分数阶导数进行了研究。在域的一部分,所考虑的方程是一个次扩散方程的分数阶导数?2(0; 1)在Riemann-Liouville意义下,另一方面,它是一个波动方程。假设参数?为未知,研究了相应的反问题。发现了一个附加条件,该条件不仅提供唯一性,而且提供所需参数的存在性。应该指出的是,确定分数阶导数的子扩散和波动方程的反问题已经被许多数学家研究。但在混合型方程的Tricomi问题中,首次研究了分数阶时间导数的确定问题。

英文摘要:

In this work, an analogue of the Tricomi problem for equations of mixed type with a fractional derivative is investigated. In one part of the domain, the considered equation is a subdiffusion equation with a fractional derivative of order ? 2 (0; 1) in the sense of Riemann-Liouville, and in the other it is a wave equation. Assuming the parameter ? to be unknown, the corresponding inverse problem is studied . It was found an additional condition, that provides not only uniqueness but also existance of the desired parameter. It should be noted that the inverse problem of determining the fractional derivative for the subdiffusion and wave equations has been studied by many mathematicians. But in the case of the Tricomi problem for a mixed-type equation, the questions of determining the fractional time derivative are studied for the first time.

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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