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ON SPECTRAL STABILITY PROBLEM FOR A PAIR OF SELF-ADJOINT ELLIPTIC DIFFERENTIAL OPERATORS ON BOUNDED OPEN SETS
Burenkov V.I., Tuyen B.T.
We prove estimates for the variation of the eigenvalues for a pair of self-adjoint elliptic
j-Self-Adjointness Conditions for Jacobi Matrices and Schrödinger and Dirac Operators with Point Interactions
Aleroev S.A., Malamud M.M.
j-Self-Adjointness Conditions for Jacobi Matrices and Schrödinger and Dirac Operators with Point
On the stability of nonlocal boundary value problem for a third order PDE
Ashyralyev A., Belakroum K.
differential equations in a Hilbert space with a self-adjoint positive definite operator. The main theorem
Besov spaces in operator theory
Peller V.V.
The survey is devoted to diverse applications of Besov classes in operator theory
A note on parabolic differential equations on manifold
Ashyralyev A., Sozen Y., Hezenci F.
Self-adjoint positive definite operator
A Note on Evolution Equation on Manifold
Ashyralyev A., Sozen Y., Hezenci F.
Self-adjoint positive definite operator
Absolute continuity of spectral shift
Malamud M.M., Neidhardt H., Peller V.V.
for functions of contractions, dissipative operators, unitary operators and self-adjoint operators. To establish
On the index of elliptic operators associated with a diffeomorphism of a manifold
Savin A.Yu.
if the mapping is an isomorphism of bundles. The operator is found to be elliptic and self-adjoint and therefore
Functions of noncommuting operators under perturbation of class Sp
Aleksandrov A.B., Peller V.V.
In this article we prove that for (Formula presented.), there exist pairs of self-adjoint operators
On the Point Spectrum of a Non-Self-Adjoint Quasiperiodic Operator
Borisov D.I., Fedotov A.A.
We consider a difference operator acting in by the formula,, where,, and are parameters

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