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Riesz basis property of generalized eigenfunctions for many interval eigenvalue problems with eigenparameter dependent boundary-transmission conditions

机译:广义特征函数的Riesz基本属性许多间隔特征值与特征分数依赖性边缘传输条件的问题

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The main goal of this study is to provide an operator-pencil framework for the investigation of many-interval boundary-value-transmission problems (BVTP) with eigenparameter appearing in the boundary-transmission conditions. By applying an our own approaches the considered problem is transformed into an eigenvalue problem for suitable integral equation in terms of which it is defined a concept of generalized eigenfunctions. We introduce some self-adjoint compact operators in suitable Sobolev spaces such a way that the considered problem can be reduced to an operator-pencil equation. Finally, it is shown that the spectrum is discrete and the set of generalized eigenfunctions form a Riesz basis of the suitable Hilbert space.
机译:本研究的主要目的是为具有在边缘传输条件中出现的特征分数计的许多间隔边界值传输问题(BVTP)提供操作员 - 铅笔框架。通过应用我们自己的方法,所考虑的问题被转换为适当的整体方程的特征值问题,从而定义了广义特征函数的概念。我们在合适的Sobolev空间中介绍了一些自伴随的紧凑型操作员,使得所考虑的问题可以减少到操作员铅笔方程。最后,示出了光谱是离散的,并且一组广义特征碰撞形成合适的希尔伯特空间的RIESZ基础。

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