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Volodymyr Derkach
Observed names:
Derkach, Volodymyr,
V A Derkach,
V. A. Derkach,
V. Derkach,
V.A. Derkach
Institution:
Vasyl' Stus Donetsk National University
Observed institutions:
Technische Universität Ilmenau,
Vasyl' Stus Donetsk National University,
Dragomanov Ukrainian State University,
Donetsk National Technical University
ORCID:
0000-0003-0343-232X
Observed ORCID:
0000-0003-0343-232X
OpenAlex ID:
A5087046994
Generalized resolvents and the boundary value problems for Hermitian operators with gaps
1991
·
V.A. Derkach
, M.M. Malamud
·
Journal of Functional Analysis
·
506
The extension theory of Hermitian operators and the moment problem
1995
·
V. A. Derkach
, M. M. Malamud
·
Journal of Mathematical Sciences
·
310
Boundary relations and generalized resolvents of symmetric operators
2009
·
V. Derkach
, S. Hassi
, et al.
·
Russian Journal of Mathematical Physics
·
93
PDF
On generalized resolvents of Hermitian relations in Krein spaces
1999
·
V. A. Derkach
·
Journal of Mathematical Sciences
·
74
On Weyl function and generalized resolvents of a Hermitian operator in a Krein space
1995
·
V. Derkach
·
Integral Equations and Operator Theory
·
57
Characteristic functions of almost solvable extensions of Hermitian operators
1992
·
V. A. Derkach
, M. M. Malamud
·
Ukrainian Mathematical Journal
·
39
Sectorial extensions of a positive operator and the characteristic function
1989
·
V. A. Derkach
, M. M. Malamud
, et al.
·
Ukrainian Mathematical Journal
·
37
Boundary triplets and Weyl functions. Recent developments
2012
·
V.A. Derkach
, S. Hassi
, et al.
·
Cambridge University Press eBooks
·
24
On the convergence of Padé approximations for generalized Nevanlinna functions
2007
·
M. S. Derevyagin
, V. A. Derkach
·
Transactions of the Moscow Mathematical Society
·
24
PDF
Transparent boundary conditions for the stationary Schrödinger equation via Weyl–Titchmarsh theory *
2025
·
V A Derkach
, C Trunk
, et al.
·
Journal of Physics A Mathematical and Theoretical
·
20
PDF
A realization theorem for generalized Nevanlinna families
2011
·
J. Behrndt
, Volodymyr Derkach
, et al.
·
Operators and Matrices
·
20
PDF
Generalized boundary triples, I. Some classes of isometric and unitary boundary pairs and realization problems for subclasses of Nevanlinna functions
2020
·
Volodymyr Derkach
, Seppo Hassi
, et al.
·
Mathematische Nachrichten
·
19
PDF
The Schur algorithm for an indefinite Stieltjes moment problem
2016
·
Volodymyr Derkach
, Ivan Kovalyov
·
Mathematische Nachrichten
·
10
PDF
Generalized boundary triples, II. Some applications of generalized boundary triples and form domain invariant Nevanlinna functions
2022
·
Volodymyr Derkach
, Seppo Hassi
, et al.
·
Mathematische Nachrichten
·
9
Functional models for entire symmetric operators in rigged de Branges Pontryagin spaces
2020
·
Volodymyr Derkach
, Harry Dym
·
Journal of Functional Analysis
·
9
On Schur–Nevanlinna–Pick Indefinite Interpolation Problem
2003
·
V. A. Derkach
·
Ukrainian Mathematical Journal
·
9
Non-self-adjoint extensions of a hermitian operator and their characteristic functions
1999
·
V. A. Derkach
, M. M. Malamud
·
Journal of Mathematical Sciences
·
7
Extensions of Laguerre operators in indefinite inner product spaces
1998
·
V. A. Derkach
·
Mathematical Notes
·
7
Extension Theory of Symmetric Operators and Boundary Value Problems
2025
·
Volodymyr Derkach
, Mark Malamud
·
Operator theory
·
5
Full indefinite Stieltjes moment problem and Padé approximants
2020
·
Volodymyr Derkach
, Ivan Kovalyov
·
Methods of Functional Analysis and Topology
·
5
PDF
Entire Symmetric Operators in de Branges–Pontryagin Spaces and a Truncated Matrix Moment Problem
2024
·
Volodymyr Derkach
, Harry Dym
·
Complex Analysis and Operator Theory
·
4
Indefinite Sturm–Liouville Operators in Polar Form
2024
·
Branko Ćurgus
, Volodymyr Derkach
, et al.
·
Integral Equations and Operator Theory
·
4
PDF
On generalized resolvents of Hermitian operators in Krein spaces
1994
·
V. A. Derkach
·
Ukrainian Mathematical Journal
·
4
Inverse problem in the theory of characteristic operator functions of unbounded operator bundles in a ?? space
1979
·
Yu. M. Arlinskii
, V. A. Derkach
·
Ukrainian Mathematical Journal
·
4
Unitary Boundary Pairs for Isometric Operators in Pontryagin Spaces and Generalized Coresolvents
2021
·
D. Baidiuk
, V. Derkach
, et al.
·
Complex Analysis and Operator Theory
·
3
PDF
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Works count:
50
Citation count:
1,317
H-index:
12
I10-index:
13
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