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Convolution Type Operators With Potential: Essential and Infinite Discrete Spectrum nonconnected essential spectrum, we give sufficient conditions for the existence of discrete eigenvalues

To the spectral theory of discrete hausdorff operatorsWe show that under an arithmetic condition the spectrum of a bounded multidimensional discrete

KURYSHKIN-WODKIEWICZ MODEL OF QUANTUM MEASUREMENTS FOR ATOMS AND IONS WITH ONE VALENCE ELECTRON theorems about compact perturbations of operators. In the proof process the explicit form of the discrete

Kuryshkin-Wodkiewicz quantum measurement model for alkaline metal atoms is generalized to a wider class of quantum objects, i.e., the optical spectrum of atoms and ions with one valence

Asymptotic expansion of the determinant of a perturbed matrixAsymptotic expansion of the determinant of a perturbed matrix

Complex eigenvalues in Kuryshkin-Wodkiewicz quantum mechanics imaginary parts. However, the discrete spectrum of the Hamiltonian of a hydrogen-like atom in this theory

Self-Adjointness and Discreteness of the Spectrum of Block Jacobi MatricesSelf-Adjointness and Discreteness of the Spectrum of Block Jacobi Matrices

On the Discreteness of the Spectrum of Matrix Schrödinger and Dirac Operators with Point InteractionsOn the Discreteness of the Spectrum of Matrix Schrödinger and Dirac Operators with Point

On the behavior of the spectrum of the limit frequencies of digits under perturbations of a real numberIt is shown that, under the action of random digitwise decaying perturbations not changing

Optimal control of a perturbed sweeping process via discrete approximationsThe paper addresses an optimal control problem for a perturbed sweeping process of the rate

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