论具有特殊形式对数核的积分算子谱的渐近性

Pub Date : 2023-12-01 DOI:10.1134/s0012266123120121
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引用次数: 0

摘要

摘要 我们研究了一个积分算子频谱的渐近行为,该算子类似于一个具有对数核的积分算子,其对数核取决于参数之和。通过简单的变量变化,相应的方程被还原为定义在有限区间上的卷积型积分方程(众所周知,一般情况下此类方程无法通过二次方程求解)。接着,利用傅立叶变换,方程被简化为解析函数的共轭问题,然后又简化为一个无限线性代数方程组,通过分离其中的主要项,可以推导出确定原始问题频谱的关系。
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On Asymptotics of the Spectrum of an Integral Operator with a Logarithmic Kernel of a Special Form

Abstract

We study the asymptotic behavior of the spectrum of an integral operator similar to an integral operator with a logarithmic kernel depending on the sum of arguments. By a simple change of variables, the corresponding equation is reduced to an integral equation of convolution type defined on a finite interval (as is well known, such equations in the general case cannot be solved by quadratures). Next, using the Fourier transform, the equation is reduced to a conjugation problem for analytic functions and then to an infinite system of linear algebraic equations, the isolation of the main terms in which allows deriving a relation that determines the spectrum of the original problem.

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