Edit Profile (opens in new tab) Derkach, Volodymyr Oleksandrovych Co-Author Distance Author ID: derkach.volodymyr-oleksandrovych Published as: Derkach, V. A.; Derkach, Vladimir; Derkach, Volodymyr; Derkach, V. more...less Further Spellings: Derkach, Vladimir Alexandrovich; Деркач Владимир Александрович; Деркач Володимир Олександрович External Links: MGP · Math-Net.Ru Documents Indexed: 88 Publications since 1975, including 3 Additional arXiv Preprints Reviewing Activity: 41 Reviews Biographic References: 1 Publication Co-Authors: 21 Co-Authors with 68 Joint Publications 479 Co-Co-Authors all top 5 Co-Authors 20 single-authored 27 Malamud, Mark M. 22 Hassi, Seppo 16 de Snoo, Hendrik S. V. 9 Tsekanovskii, Eduard R. 5 Dym, Harry 4 Derevyagin, Maxim S. 4 Kovalyov, Ivan Mikhailovich 3 Arlins’kyĭ, Yuriĭ Moĭseĭovych 2 Behrndt, Jussi 2 Ćurgus, Branko 2 Sukhorukova, Olena 2 Trunk, Carsten 1 Amirshadyan, A. A. 1 Amirshadyan, Arthur 1 Baidiuk, Dmytro V. 1 Belyi, Sergey V. 1 Gesztesy, Fritz 1 Mitrea, Marius 1 Schmitz, Philipp 1 Strelnikov, Dmytro 1 Winkler, Henrik all top 5 Serials 8 Methods of Functional Analysis and Topology 6 Mathematische Nachrichten 5 Integral Equations and Operator Theory 4 Doklady Akademii Nauk Ukrainskoĭ SSR, Seriya A 4 Ukraïns’kyĭ Matematychnyĭ Zhurnal 4 Journal of Functional Analysis 4 Soviet Mathematics. Doklady 4 Journal of Mathematical Sciences (New York) 3 Ukrainian Mathematical Journal 3 Soviet Mathematics 3 Dopovidi Natsional’noï Akademiï Nauk Ukraïny. Matematyka, Pryrodoznavstvo, Tekhnichni Nauky 3 Complex Analysis and Operator Theory 2 Dopovidi Akademiï Nauk Ukraïns’koï RSR. Seriya A 2 Linear Algebra and its Applications 2 Russian Academy of Sciences. Doklady. Mathematics 2 Operators and Matrices 1 Mathematical Notes 1 Zeitschrift für Angewandte Mathematik und Mechanik (ZAMM) 1 Proceedings of the American Mathematical Society 1 Transactions of the American Mathematical Society 1 Transactions of the Moscow Mathematical Society 1 Journal of Operator Theory 1 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences 1 Dopovidi Akademiï Nauk Ukraïni 1 Russian Journal of Mathematical Physics 1 Funktsional’nyĭ Analiz 1 Mathematical Physics, Analysis and Geometry 1 Matematicheskaya Fizika 1 Bulletin of Mathematical Sciences all top 5 Fields 85 Operator theory (47-XX) 27 Functional analysis (46-XX) 23 Functions of a complex variable (30-XX) 12 Ordinary differential equations (34-XX) 4 Linear and multilinear algebra; matrix theory (15-XX) 3 Approximations and expansions (41-XX) 3 Harmonic analysis on Euclidean spaces (42-XX) 3 Quantum theory (81-XX) 2 Partial differential equations (35-XX) 2 Integral transforms, operational calculus (44-XX) 1 Special functions (33-XX) 1 Sequences, series, summability (40-XX) 1 Integral equations (45-XX) 1 Global analysis, analysis on manifolds (58-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 71 Publications have been cited 1,038 times in 420 Documents Cited by ▼ Year ▼ Generalized resolvents and the boundary value problems for Hermitian operators with gaps. Zbl 0748.47004 Derkach, V. A.; Malamud, M. M. 254 1991 The extension theory of Hermitian operators and the moment problem. Zbl 0848.47004 Derkach, V. A.; Malamud, M. M. 142 1995 Boundary relations and their Weyl families. Zbl 1123.47004 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; De Snoo, Henk 72 2006 Boundary relations and generalized resolvents of symmetric operators. Zbl 1182.47026 Derkach, V.; Hassi, S.; Malamud, M.; De Snoo, H. 49 2009 Generalized resolvents of symmetric operators and admissibility. Zbl 0973.47020 Derkach, V. A.; Hassi, S.; Malamud, M. M.; de Snoo, H. S. V. 45 2000 Operator models associated with Kac subclasses of generalized Nevanlinna functions. Zbl 0948.47028 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 33 1999 On generalized resolvents of Hermitian relations in Krein spaces. Zbl 0955.47022 Derkach, V. A. 30 1999 On Weyl function and generalized resolvents of a Hermitian operator in a Krein space. Zbl 0837.47030 Derkach, V. 29 1995 On the Weyl function and Hermitian operators with gaps. Zbl 0655.47005 Derkach, V. A.; Malamud, M. M. 27 1987 Boundary triplets and Weyl functions. Recent developments. Zbl 1320.47024 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk 24 2012 On the convergence of Padé approximations for generalized Nevanlinna functions. Zbl 1161.30025 Derevyagin, M. S.; Derkach, V. A. 22 2007 Spectral problems for generalized Jacobi matrices. Zbl 1053.15018 Derevyagin, Maxim; Derkach, Vladimir 19 2004 Characteristic functions of almost solvable extensions of Hermitian operators. Zbl 0804.47009 Derkach, V. A.; Malamud, M. M. 16 1992 On linear fractional transformations associated with generalized \(J\)-inner matrix functions. Zbl 1185.47015 Derkach, Vladimir; Dym, Harry 13 2009 Darboux transformations of Jacobi matrices and Padé approximation. Zbl 1227.47018 Derevyagin, Maxim; Derkach, Vladimir 13 2011 Singular perturbations of self-adjoint operators. Zbl 1051.47011 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 12 2003 Generalized boundary triples. I: Some classes of isometric and unitary boundary pairs and realization problems for subclasses of Nevanlinna functions. Zbl 1514.47006 Derkach, Volodymyr; Hassi, Seppo; Malamud, Mark 11 2020 A realization theorem for generalized Nevanlinna families. Zbl 1255.46011 Behrndt, J.; Derkach, V. A.; Hassi, S.; de Snoo, H. S. V. 10 2011 Extensions of Laguerre operators in indefinite inner product spaces. Zbl 0923.47018 Derkach, V. A. 9 1998 On indefinite moment problems and resolvent matrices of Hermitian operators in Kreĭn spaces. Zbl 0869.47010 Derkach, Vladimir 9 1997 A reproducing kernel space model for \(\mathbf{N}_\kappa\)-functions. Zbl 1055.47019 Derkach, Vladimir; Hassi, Seppo 8 2003 Boundary triplets, Weyl functions, and the Kreĭn formula. Zbl 1347.47015 Derkach, Vladimir 8 2015 Bitangential interpolation in generalized Schur classes. Zbl 1218.30088 Derkach, Vladimir; Dym, Harry 8 2010 Sectorial extensions of a positive operator, and the characteristic function. Zbl 0698.47004 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 8 1988 Sectorial extensions of a positive operator and a characteristic function. Zbl 0669.47022 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 7 1989 Rank one perturbations in a Pontryagin space with one negative square. Zbl 1028.47026 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 7 2002 Generalized Nevanlinna functions with polynomial asymptotic behaviour at infinity and regular perturbations. Zbl 0989.46009 Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk 7 2001 A class of Hermitian operator extensions and the Weyl function. Zbl 0715.47013 Derkach, V. A.; Malamud, M. M. 7 1989 Truncated moment problems in the class of generalized Nevanlinna functions. Zbl 1254.30032 Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk 7 2012 On Schur-Nevanlinna-Pick indefinite interpolation problem. Zbl 1096.47014 Derkach, V. A. 6 2003 Operator models associated with singular perturbations. Zbl 0989.47019 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 6 2001 Interpolation in generalized Nevanlinna and Stieltjes classes. Zbl 0997.47012 Amirshadyan, Arthur; Derkach, Vladimir 6 1999 On some classes of holomorphic operator functions with nonnegative imaginary part. Zbl 0943.47012 Derkach, V. A.; Malamud, M. M. 6 1997 On a class of generalized Stieltjes continued fractions. Zbl 1363.47055 Derkach, Vladimir; Kovalyov, Ivan 6 2015 Sectorial extensions of a positive operator and the characteristic function. Zbl 0709.47033 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 6 1989 On extensions of a non-densely defined Hermitian operator in Krein space. Zbl 0749.47021 Derkach, V. A. 6 1990 On indefinite abstract interpolation problem. Zbl 0991.41006 Derkach, Vladimir 5 2001 The Schur algorithm for an indefinite Stieltjes moment problem. Zbl 1381.30024 Derkach, Volodymyr; Kovalyov, Ivan 5 2017 On generalized resolvents of a class of Hermitian operators in a Krein space. Zbl 0895.47025 Derkach, V. A. 5 1991 Convergence of diagonal Padé approximants for a class of definitizable functions. Zbl 1204.30025 Derevyagin, Maxim; Derkach, Vladimir 5 2010 Characteristic functions of linear operators. Zbl 0820.47007 Derkach, V. A.; Malamud, M. M. 4 1992 On realization of the Kreĭn–Langer class \(N_{\kappa}\) of matrix-valued functions in Pontryagin spaces. Zbl 1156.47011 Arlinskiĭ, Yury; Belyi, Sergey; Derkach, Vladimir; Tsekanovskii, Eduard 4 2008 Asymptotic expansions of generalized Nevanlinna functions and their spectral properties. Zbl 1133.46013 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 4 2007 On the unitary equivalent quasi-Hermitian extensions of Hermitian operators. Zbl 0463.47021 Arlinskij, Yu. M.; Derkach, V. A.; Tsekanovskij, Eh. R. 4 1981 A generalization of a class of Krein-Stieltjes functions. Zbl 0819.47012 Derkach, V. A.; Malamud, M. M. 3 1991 Rigged de Branges-Pontryagin spaces and their application to extensions and embedding. Zbl 1423.46038 Derkach, Vladimir; Dym, Harry 3 2019 Extension of the Hermitian operator in Krejn space. Zbl 0657.47040 Derkach, V. A. 3 1988 On Krein space symmetric linear relations with gaps. Zbl 0943.47028 Derkach, Vladimir 3 1998 Non-self-adjoint extensions of a Hermitian operator and their characteristic functions. Zbl 0971.47003 Derkach, V. A.; Malamud, M. M. 3 1999 A generalized Schur-Takagi interpolation problem. Zbl 1304.30046 Derkach, Vladimir; Dym, Harry 3 2014 On some classes of analytic operator-functions with non-negative imaginary part. Zbl 0692.47016 Derkach, V. A.; Malamud, M. M. 3 1989 On generalized resolvents of Hermitian operators in Krein space. Zbl 0838.47025 Derkach, V. A. 3 1994 Inverse problems for Weyl functions, preresolvent and resolvent matrices of Hermitian operators. Zbl 1052.47501 Derkach, V. A.; Malamud, M. M. 2 1992 A factorization model for the generalized Friedrichs extension in a Pontryagin space. Zbl 1116.47031 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 2 2006 Boundary relations and orthogonal coupling of symmetric operators. Zbl 1110.47007 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk 2 2005 Coupling of symmetric operators and the third Green identity. Zbl 1466.47017 Behrndt, Jussi; Derkach, Vladimir; Gesztesy, Fritz; Mitrea, Marius 2 2018 On generalized resolvents of Hermitian operators in Krein spaces. Zbl 0851.47026 Derkach, V. A. 2 1994 Full indefinite Stieltjes moment problem and Padé approximants. Zbl 1463.30169 Derkach, Volodymyr; Kovalyov, Ivan 2 2020 An operator approach to the indefinite Stieltjes moment problem. Zbl 1387.30050 Derkach, Vladimir; Kovalyov, Ivan 2 2017 Generalized \(\gamma\)-generating matrices and Nehari-Takagi problem. Zbl 1368.47013 Derkach, Volodymyr; Sukhorukova, Olena 2 2016 A class of Hermitian operator extensions and the Weyl function. Zbl 0738.47020 Derkach, V. A.; Malamud, M. M. 2 1989 The resolvent matrix of an Hermitian operator and a moment problem with gaps. Zbl 0756.47027 Derkach, V. A.; Malamud, M. M. 2 1990 Abstract interpolation problem in Nevanlinna classes. Zbl 1217.47034 Derkach, Vladimir 2 2009 \(A\)-regular-\(A\)-singular factorizations of generalized \(J\)-inner matrix functions. Zbl 1399.47064 Derkach, Volodymyr; Sukhorukova, Olena 1 2017 On characteristic functions of linear relations and unitary colligations. Zbl 0986.47008 Derkach, V. A. 1 2001 On \(\pi\)-selfadjoint biexpansions of \(\pi\)-hermitian operators. Zbl 0298.47019 Derkach, V. A. 1 1975 Singular parturbations as range perturbations in a Pontryagin space. Zbl 1084.47010 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 1 2004 Generalized boundary triples. II: Some applications of generalized boundary triples and form domain invariant Nevanlinna functions. Zbl 07747288 Derkach, Volodymyr; Hassi, Seppo; Malamud, Mark 1 2022 On a class of integral systems. Zbl 1486.34068 Derkach, Volodymyr; Strelnikov, Dmytro; Winkler, Henrik 1 2021 Partially fundamentally reducible operators in Kreĭn spaces. Zbl 1334.47039 Ćurgus, Branko; Derkach, Vladimir 1 2015 On characteristic operator-functions of accretive operator nodes. Zbl 0468.47007 Derkach, V. A.; Tsekanovskij, Eh. R. 1 1981 Generalized boundary triples. II: Some applications of generalized boundary triples and form domain invariant Nevanlinna functions. Zbl 07747288 Derkach, Volodymyr; Hassi, Seppo; Malamud, Mark 1 2022 On a class of integral systems. Zbl 1486.34068 Derkach, Volodymyr; Strelnikov, Dmytro; Winkler, Henrik 1 2021 Generalized boundary triples. I: Some classes of isometric and unitary boundary pairs and realization problems for subclasses of Nevanlinna functions. Zbl 1514.47006 Derkach, Volodymyr; Hassi, Seppo; Malamud, Mark 11 2020 Full indefinite Stieltjes moment problem and Padé approximants. Zbl 1463.30169 Derkach, Volodymyr; Kovalyov, Ivan 2 2020 Rigged de Branges-Pontryagin spaces and their application to extensions and embedding. Zbl 1423.46038 Derkach, Vladimir; Dym, Harry 3 2019 Coupling of symmetric operators and the third Green identity. Zbl 1466.47017 Behrndt, Jussi; Derkach, Vladimir; Gesztesy, Fritz; Mitrea, Marius 2 2018 The Schur algorithm for an indefinite Stieltjes moment problem. Zbl 1381.30024 Derkach, Volodymyr; Kovalyov, Ivan 5 2017 An operator approach to the indefinite Stieltjes moment problem. Zbl 1387.30050 Derkach, Vladimir; Kovalyov, Ivan 2 2017 \(A\)-regular-\(A\)-singular factorizations of generalized \(J\)-inner matrix functions. Zbl 1399.47064 Derkach, Volodymyr; Sukhorukova, Olena 1 2017 Generalized \(\gamma\)-generating matrices and Nehari-Takagi problem. Zbl 1368.47013 Derkach, Volodymyr; Sukhorukova, Olena 2 2016 Boundary triplets, Weyl functions, and the Kreĭn formula. Zbl 1347.47015 Derkach, Vladimir 8 2015 On a class of generalized Stieltjes continued fractions. Zbl 1363.47055 Derkach, Vladimir; Kovalyov, Ivan 6 2015 Partially fundamentally reducible operators in Kreĭn spaces. Zbl 1334.47039 Ćurgus, Branko; Derkach, Vladimir 1 2015 A generalized Schur-Takagi interpolation problem. Zbl 1304.30046 Derkach, Vladimir; Dym, Harry 3 2014 Boundary triplets and Weyl functions. Recent developments. Zbl 1320.47024 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk 24 2012 Truncated moment problems in the class of generalized Nevanlinna functions. Zbl 1254.30032 Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk 7 2012 Darboux transformations of Jacobi matrices and Padé approximation. Zbl 1227.47018 Derevyagin, Maxim; Derkach, Vladimir 13 2011 A realization theorem for generalized Nevanlinna families. Zbl 1255.46011 Behrndt, J.; Derkach, V. A.; Hassi, S.; de Snoo, H. S. V. 10 2011 Bitangential interpolation in generalized Schur classes. Zbl 1218.30088 Derkach, Vladimir; Dym, Harry 8 2010 Convergence of diagonal Padé approximants for a class of definitizable functions. Zbl 1204.30025 Derevyagin, Maxim; Derkach, Vladimir 5 2010 Boundary relations and generalized resolvents of symmetric operators. Zbl 1182.47026 Derkach, V.; Hassi, S.; Malamud, M.; De Snoo, H. 49 2009 On linear fractional transformations associated with generalized \(J\)-inner matrix functions. Zbl 1185.47015 Derkach, Vladimir; Dym, Harry 13 2009 Abstract interpolation problem in Nevanlinna classes. Zbl 1217.47034 Derkach, Vladimir 2 2009 On realization of the Kreĭn–Langer class \(N_{\kappa}\) of matrix-valued functions in Pontryagin spaces. Zbl 1156.47011 Arlinskiĭ, Yury; Belyi, Sergey; Derkach, Vladimir; Tsekanovskii, Eduard 4 2008 On the convergence of Padé approximations for generalized Nevanlinna functions. Zbl 1161.30025 Derevyagin, M. S.; Derkach, V. A. 22 2007 Asymptotic expansions of generalized Nevanlinna functions and their spectral properties. Zbl 1133.46013 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 4 2007 Boundary relations and their Weyl families. Zbl 1123.47004 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; De Snoo, Henk 72 2006 A factorization model for the generalized Friedrichs extension in a Pontryagin space. Zbl 1116.47031 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 2 2006 Boundary relations and orthogonal coupling of symmetric operators. Zbl 1110.47007 Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk 2 2005 Spectral problems for generalized Jacobi matrices. Zbl 1053.15018 Derevyagin, Maxim; Derkach, Vladimir 19 2004 Singular parturbations as range perturbations in a Pontryagin space. Zbl 1084.47010 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 1 2004 Singular perturbations of self-adjoint operators. Zbl 1051.47011 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 12 2003 A reproducing kernel space model for \(\mathbf{N}_\kappa\)-functions. Zbl 1055.47019 Derkach, Vladimir; Hassi, Seppo 8 2003 On Schur-Nevanlinna-Pick indefinite interpolation problem. Zbl 1096.47014 Derkach, V. A. 6 2003 Rank one perturbations in a Pontryagin space with one negative square. Zbl 1028.47026 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 7 2002 Generalized Nevanlinna functions with polynomial asymptotic behaviour at infinity and regular perturbations. Zbl 0989.46009 Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk 7 2001 Operator models associated with singular perturbations. Zbl 0989.47019 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 6 2001 On indefinite abstract interpolation problem. Zbl 0991.41006 Derkach, Vladimir 5 2001 On characteristic functions of linear relations and unitary colligations. Zbl 0986.47008 Derkach, V. A. 1 2001 Generalized resolvents of symmetric operators and admissibility. Zbl 0973.47020 Derkach, V. A.; Hassi, S.; Malamud, M. M.; de Snoo, H. S. V. 45 2000 Operator models associated with Kac subclasses of generalized Nevanlinna functions. Zbl 0948.47028 Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk 33 1999 On generalized resolvents of Hermitian relations in Krein spaces. Zbl 0955.47022 Derkach, V. A. 30 1999 Interpolation in generalized Nevanlinna and Stieltjes classes. Zbl 0997.47012 Amirshadyan, Arthur; Derkach, Vladimir 6 1999 Non-self-adjoint extensions of a Hermitian operator and their characteristic functions. Zbl 0971.47003 Derkach, V. A.; Malamud, M. M. 3 1999 Extensions of Laguerre operators in indefinite inner product spaces. Zbl 0923.47018 Derkach, V. A. 9 1998 On Krein space symmetric linear relations with gaps. Zbl 0943.47028 Derkach, Vladimir 3 1998 On indefinite moment problems and resolvent matrices of Hermitian operators in Kreĭn spaces. Zbl 0869.47010 Derkach, Vladimir 9 1997 On some classes of holomorphic operator functions with nonnegative imaginary part. Zbl 0943.47012 Derkach, V. A.; Malamud, M. M. 6 1997 The extension theory of Hermitian operators and the moment problem. Zbl 0848.47004 Derkach, V. A.; Malamud, M. M. 142 1995 On Weyl function and generalized resolvents of a Hermitian operator in a Krein space. Zbl 0837.47030 Derkach, V. 29 1995 On generalized resolvents of Hermitian operators in Krein space. Zbl 0838.47025 Derkach, V. A. 3 1994 On generalized resolvents of Hermitian operators in Krein spaces. Zbl 0851.47026 Derkach, V. A. 2 1994 Characteristic functions of almost solvable extensions of Hermitian operators. Zbl 0804.47009 Derkach, V. A.; Malamud, M. M. 16 1992 Characteristic functions of linear operators. Zbl 0820.47007 Derkach, V. A.; Malamud, M. M. 4 1992 Inverse problems for Weyl functions, preresolvent and resolvent matrices of Hermitian operators. Zbl 1052.47501 Derkach, V. A.; Malamud, M. M. 2 1992 Generalized resolvents and the boundary value problems for Hermitian operators with gaps. Zbl 0748.47004 Derkach, V. A.; Malamud, M. M. 254 1991 On generalized resolvents of a class of Hermitian operators in a Krein space. Zbl 0895.47025 Derkach, V. A. 5 1991 A generalization of a class of Krein-Stieltjes functions. Zbl 0819.47012 Derkach, V. A.; Malamud, M. M. 3 1991 On extensions of a non-densely defined Hermitian operator in Krein space. Zbl 0749.47021 Derkach, V. A. 6 1990 The resolvent matrix of an Hermitian operator and a moment problem with gaps. Zbl 0756.47027 Derkach, V. A.; Malamud, M. M. 2 1990 Sectorial extensions of a positive operator and a characteristic function. Zbl 0669.47022 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 7 1989 A class of Hermitian operator extensions and the Weyl function. Zbl 0715.47013 Derkach, V. A.; Malamud, M. M. 7 1989 Sectorial extensions of a positive operator and the characteristic function. Zbl 0709.47033 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 6 1989 On some classes of analytic operator-functions with non-negative imaginary part. Zbl 0692.47016 Derkach, V. A.; Malamud, M. M. 3 1989 A class of Hermitian operator extensions and the Weyl function. Zbl 0738.47020 Derkach, V. A.; Malamud, M. M. 2 1989 Sectorial extensions of a positive operator, and the characteristic function. Zbl 0698.47004 Derkach, V. A.; Malamud, M. M.; Tsekanovskij, Eh. R. 8 1988 Extension of the Hermitian operator in Krejn space. Zbl 0657.47040 Derkach, V. A. 3 1988 On the Weyl function and Hermitian operators with gaps. Zbl 0655.47005 Derkach, V. A.; Malamud, M. M. 27 1987 On the unitary equivalent quasi-Hermitian extensions of Hermitian operators. Zbl 0463.47021 Arlinskij, Yu. M.; Derkach, V. A.; Tsekanovskij, Eh. R. 4 1981 On characteristic operator-functions of accretive operator nodes. Zbl 0468.47007 Derkach, V. A.; Tsekanovskij, Eh. R. 1 1981 On \(\pi\)-selfadjoint biexpansions of \(\pi\)-hermitian operators. Zbl 0298.47019 Derkach, V. A. 1 1975 all cited Publications top 5 cited Publications all top 5 Cited by 284 Authors 50 Malamud, Mark M. 43 Behrndt, Jussi 29 Derkach, Volodymyr Oleksandrovych 24 Neidhardt, Hagen 22 Derevyagin, Maxim S. 19 Mogilevskii, Vadim 17 Hassi, Seppo 17 Kostenko, Aleksey S. 15 Alpay, Daniel Aron 15 Gesztesy, Fritz 14 de Snoo, Hendrik S. V. 13 Pankrashkin, Konstantin 13 Tsekanovskii, Eduard R. 12 Dijksma, Aad 12 Posilicano, Andrea 10 Kiselev, Alexander V. 10 Lotoreichik, Vladimir 9 Albeverio, Sergio A. 9 Arlins’kyĭ, Yuriĭ Moĭseĭovych 9 Langer, Heinz 9 Langer, Matthias 9 Trunk, Carsten 9 Winkler, Henrik 8 Brasche, Johannes Friedemann 8 Lewkowicz, Izchak 8 Mitrea, Marius 8 Naboko, Serguei N. 8 Wietsma, Hendrik Luit 8 Wood, Ian Geoffrey 7 Cherednichenko, Kirill D. 7 Kuzhel, Sergei 7 Popov, Igor’ Yur’evich 6 Belyi, Sergey V. 6 Brown, B. Malcolm 6 Dym, Harry 6 Ershova, Yulia Yu. 6 Kovalyov, Ivan Mikhailovich 6 Teschl, Gerald 6 Wojtylak, Michał 5 Anan’eva, Aleksandra Yur’evna 5 Budyka, Viktoriya S. 5 Ćurgus, Branko 5 Frymark, Dale 5 Holzmann, Markus 5 Luger, Annemarie 5 Mantile, Andrea 5 Nizhnik, Leonid Pavlovich 5 Rohleder, Jonathan 5 Silva, Luis O. 4 Ashbaugh, Mark S. 4 Baidiuk, Dmytro V. 4 Colombo, Fabrizio 4 Exner, Pavel 4 Geyler, Vladimir A. 4 Granovskyi, Yaroslav I. 4 Juršėnas, Rytis 4 Marletta, Marco 4 Oridoroga, Leonid L. 4 Post, Olaf 4 Sabadini, Irene 4 Woracek, Harald 4 Zinchenko, Maxim 3 Boitsev, A. A. 3 Bolotnikov, Vladimir 3 Brüning, Jochen 3 Eckhardt, Jonathan 3 Fischbacher, Christoph 3 Goloshchapova, N. I. 3 Grubb, Gerd 3 Karpenko, Irina I. 3 Kurasov, Pavel B. 3 Nichols, Roger 3 Schmüdgen, Konrad 3 Shondin, Yu. G. 3 Shondin, Yuri 3 Simonov, Sergey A. 3 Strelnikov, Dmytro 3 Zhedanov, Alexei S. 2 Arov, Damir Zyamovich 2 Azizov, Tomas Ya. 2 Bailey, Rachel 2 Ball, Joseph Anthony 2 Budyika, Viktoriya S. 2 Cacciapuoti, Claudio 2 Cassano, Biagio 2 Chen, Gongning 2 Fritzsche, Bernd 2 Hu, Yongjian 2 Jørgensen, Palle E. T. 2 Karabash, Illya M. 2 Kirstein, Bernd 2 Kochubeĭ, Anatoliĭ Naumovych 2 Kovalëv, Yuriĭ Dmitrievich 2 Kurula, Mikael 2 Leben, Leslie 2 Lenz, Daniel H. 2 Liaw, Constanze 2 Littlejohn, Lance L. 2 Mädler, Conrad 2 Makarov, Konstantin A. ...and 184 more Authors all top 5 Cited in 94 Serials 30 Journal of Functional Analysis 27 Integral Equations and Operator Theory 27 Journal of Mathematical Sciences (New York) 24 Mathematische Nachrichten 23 Journal of Mathematical Analysis and Applications 22 Complex Analysis and Operator Theory 21 Journal of Differential Equations 19 Linear Algebra and its Applications 13 Mathematical Notes 11 Ukrainian Mathematical Journal 9 Annales Henri Poincaré 8 Journal of Mathematical Physics 8 Journal of Approximation Theory 8 Doklady Mathematics 7 Advances in Mathematics 7 Russian Journal of Mathematical Physics 5 Communications in Mathematical Physics 5 Opuscula Mathematica 4 Journal d’Analyse Mathématique 4 Functional Analysis and its Applications 4 Transactions of the American Mathematical Society 4 Indagationes Mathematicae. New Series 4 Operators and Matrices 4 Journal of Spectral Theory 3 Letters in Mathematical Physics 3 Theoretical and Mathematical Physics 3 Reviews in Mathematical Physics 3 Journal of Computational and Applied Mathematics 3 Transactions of the Moscow Mathematical Society 3 St. Petersburg Mathematical Journal 3 Carpathian Mathematical Publications 2 Reports on Mathematical Physics 2 Journal of Soviet Mathematics 2 Mathematische Annalen 2 Mathematische Zeitschrift 2 Mathematika 2 Proceedings of the American Mathematical Society 2 Systems & Control Letters 2 Journal de Mathématiques Pures et Appliquées. Neuvième Série 2 Expositiones Mathematicae 2 Journal of Difference Equations and Applications 2 Mathematical Physics, Analysis and Geometry 2 Differential Equations 2 Journal of Evolution Equations 2 Mediterranean Journal of Mathematics 2 Complex Variables and Elliptic Equations 1 Analysis Mathematica 1 Applicable Analysis 1 Physics Letters. A 1 Rocky Mountain Journal of Mathematics 1 Studia Mathematica 1 Acta Scientiarum Mathematicarum 1 Applied Mathematics and Computation 1 Archiv der Mathematik 1 Bulletin of the London Mathematical Society 1 Bulletin de la Société Mathématique de France 1 Canadian Journal of Mathematics 1 Dissertationes Mathematicae 1 Monatshefte für Mathematik 1 Proceedings of the Edinburgh Mathematical Society. Series II 1 Rendiconti del Circolo Matemàtico di Palermo. Serie II 1 Siberian Mathematical Journal 1 Tokyo Journal of Mathematics 1 Advances in Applied Mathematics 1 Rendiconti di Matematica e delle sue Applicazioni. Serie VII 1 Zeitschrift für Analysis und ihre Anwendungen 1 Acta Mathematica Hungarica 1 Revista Matemática Iberoamericana 1 Numerical Algorithms 1 Communications in Partial Differential Equations 1 SIAM Journal on Applied Mathematics 1 Turkish Journal of Mathematics 1 Boletín de la Sociedad Matemática Mexicana. Third Series 1 Sbornik: Mathematics 1 Matematychni Metody ta Fizyko-Mekhanichni Polya 1 Positivity 1 Proceedings of the Royal Society of London. Series A. Mathematical, Physical and Engineering Sciences 1 Lobachevskii Journal of Mathematics 1 Computational Methods and Function Theory 1 Milan Journal of Mathematics 1 Multiscale Modeling & Simulation 1 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie V 1 Nonlinear Oscillations 1 Networks and Heterogeneous Media 1 Electronic Journal of Statistics 1 Advances in Mathematical Physics 1 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 1 Annals of Functional Analysis 1 Analysis and Mathematical Physics 1 Bulletin of Mathematical Sciences 1 Arabian Journal of Mathematics 1 Quantum Studies: Mathematics and Foundations 1 Journal of Function Spaces 1 Constructive Mathematical Analysis all top 5 Cited in 33 Fields 335 Operator theory (47-XX) 110 Ordinary differential equations (34-XX) 85 Partial differential equations (35-XX) 77 Quantum theory (81-XX) 57 Functions of a complex variable (30-XX) 55 Functional analysis (46-XX) 24 Linear and multilinear algebra; matrix theory (15-XX) 21 Harmonic analysis on Euclidean spaces (42-XX) 13 Special functions (33-XX) 11 Approximations and expansions (41-XX) 11 Global analysis, analysis on manifolds (58-XX) 8 Combinatorics (05-XX) 7 Systems theory; control (93-XX) 6 Integral transforms, operational calculus (44-XX) 5 Real functions (26-XX) 5 Mechanics of deformable solids (74-XX) 5 Statistical mechanics, structure of matter (82-XX) 4 Integral equations (45-XX) 4 Optics, electromagnetic theory (78-XX) 3 Difference and functional equations (39-XX) 2 Nonassociative rings and algebras (17-XX) 2 Potential theory (31-XX) 2 Probability theory and stochastic processes (60-XX) 2 Numerical analysis (65-XX) 2 Fluid mechanics (76-XX) 1 History and biography (01-XX) 1 Measure and integration (28-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Dynamical systems and ergodic theory (37-XX) 1 Abstract harmonic analysis (43-XX) 1 Convex and discrete geometry (52-XX) 1 Statistics (62-XX) 1 Information and communication theory, circuits (94-XX) Citations by Year