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Perturbation theory of eigenvalue problems
Franz Rellich,B. J. Berkowitz +1 more
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The article was published on 1969-01-01 and is currently open access. It has received 600 citations till now. The article focuses on the topics: Inverse iteration & Eigenvalue perturbation.read more
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On Rellich’s Inequalities in Euclidean Spaces
TL;DR: In this article, a family of domains having vanishing Rellich constants was described, and a new version of the rellich inequality for linear combinations of test functions and their derivatives of orders one and two was presented.
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An Approach to Solving Inverse Eigenvalue Problems for Matrices
TL;DR: In this article, different formulations of inverse eigenvalue problems for matrices whose entries either polynomially or rationally depend on unknown parameters are considered, and an approach to solving inverse problems together with numerical algorithms is suggested.
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Minimization of the ground state of the mixture of two conducting materials in a small contrast regime
TL;DR: In this article, the problem of distributing two conducting materials with a prescribed volume ratio in a given domain so as to minimize the first eigenvalue of an elliptic operator with Dirichlet conditions was considered.
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Matrices over differential fields which commute with their derivative
TL;DR: In this paper, the authors proved the diagonalizability of a matrix over a differential field by means of a similarity transformation from the field of constants of the differential field to the matrix.