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de Snoo, Hendrik S. V.

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Author ID: de-snoo.hendrik-s-v Recent zbMATH articles by "de Snoo, Hendrik S. V."
Published as: De Snoo, H.; De Snoo, H. S. V.; De Snoo, Hendrik S. V.; De Snoo, Henk; De Snoo, Henk S. V.; Snoo, Henk de; de Snoo, H.; de Snoo, H. S. V.; de Snoo, Hendrik; de Snoo, Hendrik S. V.; de Snoo, Henk; de Snoo, Henk S. V.
Homepage: http://www.math.rug.nl/~desnoo/
External Links: MGP
Documents Indexed: 159 Publications since 1967, including 4 Books
all top 5

Serials

9 Integral Equations and Operator Theory
8 Journal of Mathematical Analysis and Applications
7 Mathematische Nachrichten
6 Linear Algebra and its Applications
6 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics
5 Proceedings of the American Mathematical Society
4 Applicable Analysis
4 Acta Scientiarum Mathematicarum
4 Methods of Functional Analysis and Topology
4 Complex Analysis and Operator Theory
3 Journal of Differential Equations
3 Journal of Functional Analysis
3 Acta Mathematica Hungarica
3 Indagationes Mathematicae. New Series
3 Operators and Matrices
2 Pacific Journal of Mathematics
2 Journal of Operator Theory
2 Zeitschrift für Analysis und ihre Anwendungen
2 Advances in Operator Theory
1 Journal of Engineering Mathematics
1 Revue Roumaine de Mathématiques Pures et Appliquées
1 Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
1 Annales Universitatis Scientiarum Budapestinensis de Rolando Eötvös Nominatae. Sectio Mathematica
1 Compositio Mathematica
1 Dissertationes Mathematicae
1 Duke Mathematical Journal
1 Journal of the London Mathematical Society. Second Series
1 Manuscripta Mathematica
1 Mathematische Zeitschrift
1 The Quarterly Journal of Mathematics. Oxford Second Series
1 Transactions of the American Mathematical Society
1 Nieuw Archief voor Wiskunde. Derde Serie
1 SIAM Journal on Mathematical Analysis
1 Comptes Rendus de l’Académie des Sciences. Série I
1 Russian Journal of Mathematical Physics
1 Opuscula Mathematica
1 Annales Academiae Scientiarum Fennicae. Mathematica
1 Mathematical Physics, Analysis and Geometry
1 Studii şi Cercetări Ştiinţifice. Seria: Matematică
1 Dopovidi Natsional’noï Akademiï Nauk Ukraïny. Matematyka, Pryrodoznavstvo, Tekhnichni Nauky
1 Nieuw Archief voor Wiskunde. Vijfde Serie
1 Proceedings of the Cambridge Philosophical Society
1 Lecture Notes in Mathematics
1 London Mathematical Society Lecture Note Series
1 Monographs in Mathematics
1 Banach Journal of Mathematical Analysis
1 Nederlandse Akademie van Wetenschappen. Proceedings. Series A. Indagationes Mathematicae
1 Operator Theory: Advances and Applications

Publications by Year

Citations contained in zbMATH Open

139 Publications have been cited 1,381 times in 624 Documents Cited by Year
Schur functions, operator colligations, and reproducing kernel Pontryagin spaces. Zbl 0879.47006
Alpay, Daniel; Dijksma, Aad; Rovnyak, James; de Snoo, Hendrik
106
1997
Self-adjoint extensions of symmetric subspaces. Zbl 0304.47006
Dijksma, A.; de Snoo, H. S. V.
62
1974
Boundary relations and their Weyl families. Zbl 1123.47004
Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; De Snoo, Henk
60
2006
Boundary relations and generalized resolvents of symmetric operators. Zbl 1182.47026
Derkach, V.; Hassi, S.; Malamud, M.; De Snoo, H.
40
2009
Componentwise and Cartesian decompositions of linear relations. Zbl 1225.47004
Hassi, S.; De Snoo, H. S. V.; Szafraniec, F. H.
36
2009
Generalized resolvents of symmetric operators and admissibility. Zbl 0973.47020
Derkach, V. A.; Hassi, S.; Malamud, M. M.; de Snoo, H. S. V.
36
2000
Ascent, descent, nullity, defect, and related notions for linear relations in linear spaces. Zbl 1124.47003
Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
35
2007
Eigenvalues and pole functions of Hamiltonian systems with eigenvalue depending boundary conditions. Zbl 0795.34070
Dijksma, Aad; Langer, Heinz; de Snoo, Henk
35
1993
Boundary-value problems for two-dimensional canonical systems. Zbl 0966.47012
Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
33
2000
Symmetric and selfadjoint relations in Krein spaces. I. Zbl 0625.47030
Dijksma, A.; de Snoo, H. S. V.
30
1987
Operator models associated with Kac subclasses of generalized Nevanlinna functions. Zbl 0948.47028
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
29
1999
Positive selfadjoint extensions of positive symmetric subspaces. Zbl 0358.47015
Coddington, Earl A.; de Snoo, Hendrik S. V.
29
1978
Lebesgue type decompositions for nonnegative forms. Zbl 1185.47002
Hassi, Seppo; Sebestyén, Zoltán; de Snoo, Henk
28
2009
An index formula for the product of linear relations. Zbl 1176.47014
Sandovici, Adrian; de Snoo, Henk
26
2009
One-dimensional graph perturbations of selfadjoint relations. Zbl 0894.47021
Hassi, Seppo; de Snoo, Henk
24
1997
Symmetric and selfadjoint relations in Krein spaces. II. Zbl 0593.47039
Dijksma, A.; de Snoo, H. S. V.
21
1987
The Kato decomposition of quasi-Fredholm relations. Zbl 1210.47009
Labrousse, J.-Ph.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
19
2010
On Kreĭn’s extension theory of nonnegative operators. Zbl 1076.47008
Hassi, Seppo; Malamud, Mark; de Snoo, Henk
19
2004
Selfadjoint extensions for a class of symmetric operators with defect numbers (1,1). Zbl 0861.47015
Hassi, Seppo; Langer, Heinz; de Snoo, Henk
19
1995
Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. II. Zbl 0787.47013
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; de Snoo, Henk
19
1991
Boundary triplets and Weyl functions. Recent developments. Zbl 1320.47024
Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk
18
2012
Square-integrable solutions and Weyl functions for singular canonical systems. Zbl 1232.34037
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi
18
2011
A general factorization approach to the extension theory of nonnegative operators and relations. Zbl 1164.47003
Hassi, Seppo; Sandovici, Adrian; De Snoo, Henk; Winkler, Henrik
17
2007
Form sums of nonnegative selfadjoint operators. Zbl 1122.47011
Hassi, S.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
17
2006
Some interpolation problems of Nevanlinna-Pick type. The Kreĭn-Langer method. Zbl 0912.30023
Hassi, Seppo; de Snoo, Henk; Woracek, Harald
17
1998
A canonical decomposition for linear operators and linear relations. Zbl 1136.47001
Hassi, S.; Sebestyén, Z.; de Snoo, H. S. V.; Szafraniec, F. H.
16
2007
Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. I. Zbl 0737.47016
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; de Snoo, Henk
16
1991
Selfadjoint \(\Pi _{\kappa}\)-extensions of symmetric subspaces: An abstract approach to boundary problems with spectral parameter in the boundary conditions. Zbl 0552.47014
Dijksma, A.; Langer, H.; De Snoo, H. S. V.
16
1984
Boundary value problems, Weyl functions, and differential operators. Zbl 1457.47001
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk
15
2020
Hamiltonian systems with eigenvalue depending boundary conditions. Zbl 0686.58019
Dijksma, Aad; Langer, Heinz; de Snoo, Henk
15
1988
Eigenfunction expansions associated with pairs of ordinary differential expressions. Zbl 0551.47008
Dijksma, Aalt; de Snoo, Hendrik S. V.
15
1985
Extremal extensions for the sum of nonnegative selfadjoint relations. Zbl 1129.47015
Hassi, Seppo; Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
14
2007
On the class of extremal extensions of a nonnegative operator. Zbl 0996.47029
Arlinskij, Yu. M.; Hassi, S.; Sebestyén, Z.; de Snoo, H. S. V.
14
2001
Generalized coresolvents of standard isometric operators and generalized resolvents of standard symmetric relations in Krejn spaces. Zbl 0734.47018
Dijksma, Aad; Langer, Heinz; de Snoo, Henk
14
1990
Unitary colligations in \(\pi _ k\)-spaces, characteristic functions and Shtraus extensions. Zbl 0573.47027
Dijksma, A.; Langer, H.; de Snoo, H. S. V.
14
1986
Triplets of Hilbert spaces and Friedrichs extensions associated with the subclass \(\mathbb{N}_ 1\) of Nevanlinna functions. Zbl 0891.47013
Hassi, Seppo; Kaltenbäck, Michael; de Snoo, Henk
13
1997
On the nonnegativity of operator products. Zbl 1105.47003
Hassi, S.; Sebestyén, Z.; De Snoo, H. S. V.
12
2005
Singular perturbations of self-adjoint operators. Zbl 1051.47011
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
11
2003
Smooth rank one perturbations of selfadjoint operators. Zbl 0901.47003
Hassi, S.; de Snoo, H. S. V.; Willemsma, A. D. I.
11
1998
The structure of linear relations in Euclidean spaces. Zbl 1088.15004
Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
10
2005
On some operator colligations and associated reproducing kernel Hilbert spaces. Zbl 0794.47006
Alpay, Daniel; Bolotnikov, Vladimir; Dijksma, Aad; de Snoo, Henk
10
1993
Interpolation problems, extensions of symmetric operators and reproducing kernel spaces. II. Zbl 0780.47016
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; De Snoo, Henk
10
1992
Monotone convergence theorems for semi-bounded operators and forms with applications. Zbl 1200.47022
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk; Wietsma, Rudi
9
2010
Boundary relations, unitary colligations, and functional models. Zbl 1186.47007
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk
9
2009
Unitary colligations in Krein spaces and their role in the extension theory of isometries and symmetric linear relations in Hilbert spaces. Zbl 0628.47026
Dijksma, Aad; Langer, Heinz; de Snoo, Henk
9
1987
Regular boundary value problems associated with pairs of ordinary differential expressions. Zbl 0464.34003
Coddington, Earl A.; de Snoo, Hendrik S. V.
9
1981
Differential subspaces associated with pairs of ordinary differential expressions. Zbl 0398.34022
Coddington, Earl A.; de Snoo, Hendrik S. V.
9
1980
Infinite-dimensional perturbations, maximally nondensely defined symmetric operators, and some matrix representations. Zbl 1262.47003
Hassi, S.; de Snoo, H. S. V.; Szafraniec, F. H.
8
2012
Functional models for Nevanlinna families. Zbl 1183.47004
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk
8
2008
A Kreǐn space approach to representation theorems and generalized Friedrichs extensions. Zbl 1003.46015
Fleige, Andreas; Hassi, Seppo; De Snoo, Henk
8
2000
Holomorphic operators between Krein spaces and the number of squares of associated kernels. Zbl 0790.47028
Alpay, D.; Dijksma, A.; van der Ploeg, J.; de Snoo, H. S. V.
8
1992
Selfadjoint extensions of regular canonical systems with Stieltjes boundary conditions. Zbl 0714.34032
Dijksma, A.; De Snoo, H. S. V.; El Sabbagh, A. A.
8
1990
Operator methods for boundary value problems. Zbl 1269.47001
Hassi, Seppo (ed.); de Snoo, Hendrik S. V. (ed.); Szafraniec, Franciszek Hugon (ed.)
7
2012
A realization theorem for generalized Nevanlinna families. Zbl 1255.46011
Behrndt, J.; Derkach, V. A.; Hassi, S.; de Snoo, H. S. V.
7
2011
Sesquilinear forms corresponding to a non-semibounded Sturm-Liouville operator. Zbl 1187.47006
Fleige, Andreas; Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
7
2010
Domain and range descriptions for adjoint relations, and parallel sums and differences of forms. Zbl 1200.47004
Hassi, Seppo; Sebestyén, Zoltán; de Snoo, Henk
7
2010
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 general realization theorem for matrix-valued Herglotz–Nevanlinna functions. Zbl 1121.47008
Belyi, Sergey; Hassi, Seppo; de Snoo, Henk; Tsekanovskiǐ, Eduard
6
2006
Rank one perturbations in a Pontryagin space with one negative square. Zbl 1028.47026
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
6
2002
Generalized Kreǐn-von Neumann extensions and associated operator models. Zbl 0937.47006
Hassi, Seppo; Kaltenbäck, M.; de Snoo, Henk
6
1998
Nevanlinna functions, perturbation formulas, and triplets of Hilbert spaces. Zbl 0921.47019
Hassi, Seppo; de Snoo, Henk
6
1998
Selfadjoint extensions of the orthogonal sum of symmetric relations, I. Zbl 0942.47007
Hassi, Seppo; Kaltenbäch, Michael; de Snoo, Henk
6
1997
On some operator colligations and associated reproducing kernel Pontryagin spaces. Zbl 0923.47007
Alpay, D.; Bolotnikov, V.; Duksma, A.; de Snoo, H.
6
1996
A Hilbert space associated with a Nevanlinna function. Zbl 0732.46015
Alpay, Daniel; Bruinsma, Piet; Dijksma, Aad; de Snoo, Henk
6
1990
Eigenfunction expansions for nondensely defined differential operators. Zbl 0299.47023
Dijksma, A.; de Snoo, H. S. V.
6
1975
Factorization, majorization, and domination for linear relations. Zbl 1363.47006
Hassi, Seppo; de Snoo, Henk
5
2015
Non-semi-bounded closed symmetric forms associated with a generalized Friedrichs extension. Zbl 1300.47011
de Snoo, Henk; Fleige, Andreas; Hassi, Seppo; Winkler, Henrik
5
2014
Truncated moment problems in the class of generalized Nevanlinna functions. Zbl 1254.30032
Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk
5
2012
Parametrization of contractive block operator matrices and passive discrete-time systems. Zbl 1129.47012
Arlinskiĭ, Yury M.; Hassi, Seppo; de Snoo, Henk S. V.
5
2007
Operator models associated with singular perturbations. Zbl 0989.47019
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
5
2001
Realization and factorization in reproducing kernel Pontryagin spaces. Zbl 1060.46507
Alpay, D.; Dijksma, A.; Rovnyak, J.; de Snoo, H. S. V.
5
2001
Subordinate solutions and spectral measures of canonical systems. Zbl 0967.34073
Hassi, Seppo; Remling, Christian; de Snoo, Henk
5
2000
The sum of matrix Nevanlinna functions and self-adjoint extensions in exit spaces. Zbl 0907.47003
Hassi, S.; Kaltenbäck, M.; de Snoo, H. S. V.
5
1998
On rank one perturbations of selfadjoint operators. Zbl 0899.47009
Hassi, Seppo; de Snoo, Henk
5
1997
Symmetric Sturm-Liouville operators with eigenvalue depending boundary condition. Zbl 0627.34024
Dikjsma, Aad; Langer, Heinz; de Snoo, Henk
5
1987
Generalized translation operators associated with a singular differential operator. Zbl 0324.35077
Braaksma, B. L. J.; de Snoo, H. S. V.
5
1974
Factorized sectorial relations, their maximal-sectorial extensions, and form sums. Zbl 1423.47011
Hassi, Seppo; Sandovici, Adrian; de Snoo, Henk
4
2019
Extremal maximal sectorial extensions of sectorial relations. Zbl 06781254
Hassi, S.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
4
2017
Zeros of nonpositive type of generalized Nevanlinna functions with one negative square. Zbl 1257.30020
de Snoo, Henk; Winkler, Henrik; Wojtylak, Michał
4
2011
One-dimensional perturbations, asymptotic expansions, and spectral gaps. Zbl 1172.47014
Hassi, Seppo; Sandovici, Adrian; De Snoo, Henk; Winkler, Henrik
4
2009
On Kreĭn’s formula. Zbl 1179.47023
Behrndt, Jussi; De Snoo, Henk
4
2009
Commutative and noncommutative representations of matrix-valued Herglotz–Nevanlinna functions. Zbl 1068.47017
Hassi, Seppo; de Snoo, Henk; Tsekanovskii, Eduard
4
2001
On some subclasses of Nevanlinna functions. Zbl 0844.47014
Hassi, S.; de Snoo, H. S. V.
4
1996
Schur functions, operator colligations, and reproducing kernel Pontryagin spaces. Zbl 0951.47010
Alpay, Daniel; Dijksma, Aad; Rovnyak, James; de Snoo, Henk
4
1996
Characteristic functions of unitary operator colligations in \(\Pi_{\kappa}\)-spaces. Zbl 0612.47036
Dijksma, A.; Langer, H.; de Snoo, H. S. V.
4
1986
On invariant linear manifolds of Watson transforms. Zbl 0255.44002
de Snoo, H. S. V.
4
1973
Lebesgue type decompositions for linear relations and Ando’s uniqueness criterion. Zbl 1424.47007
Hassi, Seppo; Sebestyén, Zoltán; Snoo, Henk de
3
2018
Linear fractional transformations of Nevanlinna functions associated with a nonnegative operator. Zbl 1311.30033
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi; Winkler, Henrik
3
2013
Closed linear relations and their regular points. Zbl 1273.47006
Labrousse, J.-Ph.; Sandovici, A.; De Snoo, H. S. V.; Winkler, H.
3
2012
Sums, couplings, and completions of almost Pontryagin spaces. Zbl 1254.46028
de Snoo, Henk; Woracek, Harald
3
2012
Finite-dimensional graph perturbations of selfadjoint Sturm-Liouville operators. Zbl 1199.34132
Hassi, S.; De Snoo, H. S. V.; Sterk, A. E.; Winkler, H.
3
2007
Asymptotic expansions of generalized Nevanlinna functions and their spectral properties. Zbl 1133.46013
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
3
2007
Generalized Friedrichs extensions associated with interface conditions for Sturm–Liouville operators. Zbl 1111.47037
Fleige, Andreas; Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
3
2006
Canonical systems of differential equations with self-adjoint interface conditions on graphs. Zbl 1080.34068
de Snoo, Henk; Winkler, Henrik
3
2005
Singular Sturm-Liouville problems whose coefficients depend rationally on the eigenvalue parameter. Zbl 1058.34028
Hassi, Seppo; Möller, Manfred; de Snoo, Henk
3
2004
A relation for the spectral shift function of two self-adjoint extensions. Zbl 0999.47022
Langer, H.; de Snoo, H. S. V.; Yavrian, V. A.
3
2001
Selfadjoint extension of the orthogonal sum of symmetric relations. II. Zbl 0935.47006
Hassi, Seppo; Kaltenbäck, Michael; de Snoo, Henk
3
1998
A Schur type analysis of the minimal unitary Hilbert space extensions of a Kreĭn space isometry whose defect subspaces are Hilbert spaces. Zbl 0807.47012
Dijksma, A.; Marcantognini, S. A. M.; de Snoo, H. S. V.
3
1994
Characteristic functions of unitary colligations and of bounded operators in Krein spaces. Zbl 0674.47024
Ćurgus, B.; Dijksma, A.; Langer, H.; de Snoo, H. S. V.
3
1989
On the spectrum of Watson transforms. Zbl 0296.44007
de Snoo, H. S. V.
3
1974
Boundary value problems, Weyl functions, and differential operators. Zbl 1457.47001
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk
15
2020
Mathematical work of Franciszek Hugon Szafraniec and its impacts. Zbl 1444.01024
Curto, Raúl E.; Gazeau, Jean-Pierre; Horzela, Andrzej; Moslehian, Mohammad Sal; Putinar, Mihai; Schmüdgen, Konrad; de Snoo, Henk; Stochel, Jan
1
2020
Factorized sectorial relations, their maximal-sectorial extensions, and form sums. Zbl 1423.47011
Hassi, Seppo; Sandovici, Adrian; de Snoo, Henk
4
2019
Lebesgue type decompositions for linear relations and Ando’s uniqueness criterion. Zbl 1424.47007
Hassi, Seppo; Sebestyén, Zoltán; Snoo, Henk de
3
2018
Compressed resolvents, \(Q\)-functions and \(h_0\)-resolvents in almost Pontryagin spaces. Zbl 06984779
de Snoo, Henk; Woracek, Harald
2
2018
Limit-point/limit-circle classification for Hain-Lüst type equations. Zbl 1396.34013
Hassi, Seppo; Möller, Manfred; de Snoo, Henk
1
2018
Extremal maximal sectorial extensions of sectorial relations. Zbl 06781254
Hassi, S.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
4
2017
Restriction and factorization for isometric and symmetric operators in almost Pontryagin spaces. Zbl 1454.47047
de Snoo, Henk; Woracek, Harald
1
2016
Factorization, majorization, and domination for linear relations. Zbl 1363.47006
Hassi, Seppo; de Snoo, Henk
5
2015
Non-semi-bounded closed symmetric forms associated with a generalized Friedrichs extension. Zbl 1300.47011
de Snoo, Henk; Fleige, Andreas; Hassi, Seppo; Winkler, Henrik
5
2014
Global and local behavior of zeros of nonpositive type. Zbl 1308.30007
de Snoo, Henk; Winkler, Henrik; Wojtylak, Michał
2
2014
Normal intermediate extensions of symmetric relations. Zbl 1340.47005
Hassi, S.; de Snoo, H. S. V.; Szafraniec, F. H.
2
2014
Antitonicity of the inverse for selfadjoint matrices, operators, and relations. Zbl 1300.47010
Behrndt, Jussi; Hassi, Seppo; Wietsma, Hendrik; de Snoo, Henk
2
2014
Linear fractional transformations of Nevanlinna functions associated with a nonnegative operator. Zbl 1311.30033
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi; Winkler, Henrik
3
2013
Boundary triplets and Weyl functions. Recent developments. Zbl 1320.47024
Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk
18
2012
Infinite-dimensional perturbations, maximally nondensely defined symmetric operators, and some matrix representations. Zbl 1262.47003
Hassi, S.; de Snoo, H. S. V.; Szafraniec, F. H.
8
2012
Operator methods for boundary value problems. Zbl 1269.47001
Hassi, Seppo (ed.); de Snoo, Hendrik S. V. (ed.); Szafraniec, Franciszek Hugon (ed.)
7
2012
Truncated moment problems in the class of generalized Nevanlinna functions. Zbl 1254.30032
Derkach, Vladimir; Hassi, Seppo; De Snoo, Henk
5
2012
Closed linear relations and their regular points. Zbl 1273.47006
Labrousse, J.-Ph.; Sandovici, A.; De Snoo, H. S. V.; Winkler, H.
3
2012
Sums, couplings, and completions of almost Pontryagin spaces. Zbl 1254.46028
de Snoo, Henk; Woracek, Harald
3
2012
Limit properties of monotone matrix functions. Zbl 1235.26008
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi
2
2012
Square-integrable solutions and Weyl functions for singular canonical systems. Zbl 1232.34037
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk; Wietsma, Rudi
18
2011
A realization theorem for generalized Nevanlinna families. Zbl 1255.46011
Behrndt, J.; Derkach, V. A.; Hassi, S.; de Snoo, H. S. V.
7
2011
Zeros of nonpositive type of generalized Nevanlinna functions with one negative square. Zbl 1257.30020
de Snoo, Henk; Winkler, Henrik; Wojtylak, Michał
4
2011
The Kato decomposition of quasi-Fredholm relations. Zbl 1210.47009
Labrousse, J.-Ph.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
19
2010
Monotone convergence theorems for semi-bounded operators and forms with applications. Zbl 1200.47022
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk; Wietsma, Rudi
9
2010
Sesquilinear forms corresponding to a non-semibounded Sturm-Liouville operator. Zbl 1187.47006
Fleige, Andreas; Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
7
2010
Domain and range descriptions for adjoint relations, and parallel sums and differences of forms. Zbl 1200.47004
Hassi, Seppo; Sebestyén, Zoltán; de Snoo, Henk
7
2010
Boundary relations and generalized resolvents of symmetric operators. Zbl 1182.47026
Derkach, V.; Hassi, S.; Malamud, M.; De Snoo, H.
40
2009
Componentwise and Cartesian decompositions of linear relations. Zbl 1225.47004
Hassi, S.; De Snoo, H. S. V.; Szafraniec, F. H.
36
2009
Lebesgue type decompositions for nonnegative forms. Zbl 1185.47002
Hassi, Seppo; Sebestyén, Zoltán; de Snoo, Henk
28
2009
An index formula for the product of linear relations. Zbl 1176.47014
Sandovici, Adrian; de Snoo, Henk
26
2009
Boundary relations, unitary colligations, and functional models. Zbl 1186.47007
Behrndt, Jussi; Hassi, Seppo; De Snoo, Henk
9
2009
One-dimensional perturbations, asymptotic expansions, and spectral gaps. Zbl 1172.47014
Hassi, Seppo; Sandovici, Adrian; De Snoo, Henk; Winkler, Henrik
4
2009
On Kreĭn’s formula. Zbl 1179.47023
Behrndt, Jussi; De Snoo, Henk
4
2009
Passive systems with a normal main operator and quasi-selfadjoint systems. Zbl 1171.47008
Arlinskiĭ, Yury M.; Hassi, Seppo; De Snoo, Henk S. V.
1
2009
Functional models for Nevanlinna families. Zbl 1183.47004
Behrndt, Jussi; Hassi, Seppo; de Snoo, Henk
8
2008
Ascent, descent, nullity, defect, and related notions for linear relations in linear spaces. Zbl 1124.47003
Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
35
2007
A general factorization approach to the extension theory of nonnegative operators and relations. Zbl 1164.47003
Hassi, Seppo; Sandovici, Adrian; De Snoo, Henk; Winkler, Henrik
17
2007
A canonical decomposition for linear operators and linear relations. Zbl 1136.47001
Hassi, S.; Sebestyén, Z.; de Snoo, H. S. V.; Szafraniec, F. H.
16
2007
Extremal extensions for the sum of nonnegative selfadjoint relations. Zbl 1129.47015
Hassi, Seppo; Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
14
2007
Parametrization of contractive block operator matrices and passive discrete-time systems. Zbl 1129.47012
Arlinskiĭ, Yury M.; Hassi, Seppo; de Snoo, Henk S. V.
5
2007
Finite-dimensional graph perturbations of selfadjoint Sturm-Liouville operators. Zbl 1199.34132
Hassi, S.; De Snoo, H. S. V.; Sterk, A. E.; Winkler, H.
3
2007
Asymptotic expansions of generalized Nevanlinna functions and their spectral properties. Zbl 1133.46013
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
3
2007
On exceptional extensions close to the generalized Friedrichs extension of symmetric operators. Zbl 1131.47001
Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
1
2007
Boundary relations and their Weyl families. Zbl 1123.47004
Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; De Snoo, Henk
60
2006
Form sums of nonnegative selfadjoint operators. Zbl 1122.47011
Hassi, S.; Sandovici, A.; de Snoo, H. S. V.; Winkler, H.
17
2006
A general realization theorem for matrix-valued Herglotz–Nevanlinna functions. Zbl 1121.47008
Belyi, Sergey; Hassi, Seppo; de Snoo, Henk; Tsekanovskiǐ, Eduard
6
2006
Generalized Friedrichs extensions associated with interface conditions for Sturm–Liouville operators. Zbl 1111.47037
Fleige, Andreas; Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
3
2006
Quasi-Fredholm relations in Hilbert spaces. Zbl 1164.47310
Labrousse, J.-Ph.; Sandovici, A.; De Snoo, H. S. V.; Winkler, H.
2
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
\(Q\)-functions of quasi-selfadjoint contractions. Zbl 1111.47016
Arlinskiĭ, Yury; Hassi, Seppo; de Snoo, Henk
2
2006
Nonstandard boundary conditions for a class of Sturm-Liouville problems. Zbl 1120.34015
Hassi, Seppo; De Snoo, Henk; Sterk, Alef; Winkler, Henrik
1
2006
On the nonnegativity of operator products. Zbl 1105.47003
Hassi, S.; Sebestyén, Z.; De Snoo, H. S. V.
12
2005
The structure of linear relations in Euclidean spaces. Zbl 1088.15004
Sandovici, Adrian; de Snoo, Henk; Winkler, Henrik
10
2005
Canonical systems of differential equations with self-adjoint interface conditions on graphs. Zbl 1080.34068
de Snoo, Henk; Winkler, Henrik
3
2005
Boundary relations and orthogonal coupling of symmetric operators. Zbl 1110.47007
Derkach, Vladimir; Hassi, Seppo; Malamud, Mark; de Snoo, Henk
2
2005
\(Q\)-functions of Hermitian contractions of Kreĭn-Ovcharenko type. Zbl 1129.47300
Arlinskii, Yu. M.; Hassi, S.; de Snoo, H. S. V.
2
2005
Two-dimensional trace-normed canonical systems of differential equations and selfadjoint interface conditions. Zbl 1092.34007
de Snoo, Henk; Winkler, Henrik
1
2005
On Kreĭn’s extension theory of nonnegative operators. Zbl 1076.47008
Hassi, Seppo; Malamud, Mark; de Snoo, Henk
19
2004
Singular Sturm-Liouville problems whose coefficients depend rationally on the eigenvalue parameter. Zbl 1058.34028
Hassi, Seppo; Möller, Manfred; de Snoo, Henk
3
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
11
2003
One-dimensional perturbations of selfadjoint operators with finite or discrete spectrum. Zbl 1039.15001
Arlinskiĭ, Yu. M.; Hassi, S.; de Snoo, H. S. V.; Tsekanovskiĭ, E. R.
1
2003
Sturm–Liouville operators and their spectral functions. Zbl 1030.34084
Hassi, Seppo; Möller, Manfred; de Snoo, Henk
1
2003
Rank one perturbations in a Pontryagin space with one negative square. Zbl 1028.47026
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
6
2002
Realizations of Herglotz-Nevanlinna functions via \(F\)-systems. Zbl 1057.47012
Hassi, Seppo; de Snoo, Henk; Tsekanovskiĭ, Eduard
2
2002
Differential operators and spectral functions. Zbl 1104.34314
Hassi, Seppo; Moiled, Manfred; de Snoo, Henk
1
2002
On the class of extremal extensions of a nonnegative operator. Zbl 0996.47029
Arlinskij, Yu. M.; Hassi, S.; Sebestyén, Z.; de Snoo, H. S. V.
14
2001
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
5
2001
Realization and factorization in reproducing kernel Pontryagin spaces. Zbl 1060.46507
Alpay, D.; Dijksma, A.; Rovnyak, J.; de Snoo, H. S. V.
5
2001
Commutative and noncommutative representations of matrix-valued Herglotz–Nevanlinna functions. Zbl 1068.47017
Hassi, Seppo; de Snoo, Henk; Tsekanovskii, Eduard
4
2001
A relation for the spectral shift function of two self-adjoint extensions. Zbl 0999.47022
Langer, H.; de Snoo, H. S. V.; Yavrian, V. A.
3
2001
An addendum to the multiplication and factorization theorems of Brodskiĭ–Livšic–Potapov. Zbl 1068.47015
Hassi, Seppo; de Snoo, Henk; Tsekanovskii, Eduard
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.
36
2000
Boundary-value problems for two-dimensional canonical systems. Zbl 0966.47012
Hassi, Seppo; de Snoo, Henk; Winkler, Henrik
33
2000
A Kreǐn space approach to representation theorems and generalized Friedrichs extensions. Zbl 1003.46015
Fleige, Andreas; Hassi, Seppo; De Snoo, Henk
8
2000
Subordinate solutions and spectral measures of canonical systems. Zbl 0967.34073
Hassi, Seppo; Remling, Christian; de Snoo, Henk
5
2000
Operator models associated with Kac subclasses of generalized Nevanlinna functions. Zbl 0948.47028
Derkach, Vladimir; Hassi, Seppo; de Snoo, Henk
29
1999
Some interpolation problems of Nevanlinna-Pick type. The Kreĭn-Langer method. Zbl 0912.30023
Hassi, Seppo; de Snoo, Henk; Woracek, Harald
17
1998
Smooth rank one perturbations of selfadjoint operators. Zbl 0901.47003
Hassi, S.; de Snoo, H. S. V.; Willemsma, A. D. I.
11
1998
Generalized Kreǐn-von Neumann extensions and associated operator models. Zbl 0937.47006
Hassi, Seppo; Kaltenbäck, M.; de Snoo, Henk
6
1998
Nevanlinna functions, perturbation formulas, and triplets of Hilbert spaces. Zbl 0921.47019
Hassi, Seppo; de Snoo, Henk
6
1998
The sum of matrix Nevanlinna functions and self-adjoint extensions in exit spaces. Zbl 0907.47003
Hassi, S.; Kaltenbäck, M.; de Snoo, H. S. V.
5
1998
Selfadjoint extension of the orthogonal sum of symmetric relations. II. Zbl 0935.47006
Hassi, Seppo; Kaltenbäck, Michael; de Snoo, Henk
3
1998
Reproducing kernel Pontryagin spaces. Zbl 0992.46019
Alpay, Daniel; Dijksma, Aad; Rovnyak, James; De Snoo, Hendrik S. V.
1
1998
Schur functions, operator colligations, and reproducing kernel Pontryagin spaces. Zbl 0879.47006
Alpay, Daniel; Dijksma, Aad; Rovnyak, James; de Snoo, Hendrik
106
1997
One-dimensional graph perturbations of selfadjoint relations. Zbl 0894.47021
Hassi, Seppo; de Snoo, Henk
24
1997
Triplets of Hilbert spaces and Friedrichs extensions associated with the subclass \(\mathbb{N}_ 1\) of Nevanlinna functions. Zbl 0891.47013
Hassi, Seppo; Kaltenbäck, Michael; de Snoo, Henk
13
1997
Selfadjoint extensions of the orthogonal sum of symmetric relations, I. Zbl 0942.47007
Hassi, Seppo; Kaltenbäch, Michael; de Snoo, Henk
6
1997
On rank one perturbations of selfadjoint operators. Zbl 0899.47009
Hassi, Seppo; de Snoo, Henk
5
1997
A characterization of semibounded selfadjoint operators. Zbl 0883.47011
Hassi, Seppo; Kaltenbäck, Michael; de Snoo, Henk
1
1997
On some operator colligations and associated reproducing kernel Pontryagin spaces. Zbl 0923.47007
Alpay, D.; Bolotnikov, V.; Duksma, A.; de Snoo, H.
6
1996
On some subclasses of Nevanlinna functions. Zbl 0844.47014
Hassi, S.; de Snoo, H. S. V.
4
1996
Schur functions, operator colligations, and reproducing kernel Pontryagin spaces. Zbl 0951.47010
Alpay, Daniel; Dijksma, Aad; Rovnyak, James; de Snoo, Henk
4
1996
Regular Sturm-Liouville problems whose coefficients depend rationally on the eigenvalue parameter. Zbl 0863.34025
de Snoo, Henk
2
1996
Selfadjoint extensions for a class of symmetric operators with defect numbers (1,1). Zbl 0861.47015
Hassi, Seppo; Langer, Heinz; de Snoo, Henk
19
1995
A Schur type analysis of the minimal unitary Hilbert space extensions of a Kreĭn space isometry whose defect subspaces are Hilbert spaces. Zbl 0807.47012
Dijksma, A.; Marcantognini, S. A. M.; de Snoo, H. S. V.
3
1994
Eigenvalues and pole functions of Hamiltonian systems with eigenvalue depending boundary conditions. Zbl 0795.34070
Dijksma, Aad; Langer, Heinz; de Snoo, Henk
35
1993
...and 39 more Documents
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Cited by 419 Authors

68 Alpay, Daniel Aron
47 de Snoo, Hendrik S. V.
41 Behrndt, Jussi
36 Dijksma, Aad
34 Hassi, Seppo
24 Langer, Heinz
23 Colombo, Fabrizio
21 Derkach, Vladimir Alexandrovich
21 Woracek, Harald
19 Sabadini, Irene
18 Sandovici, Adrian
16 Álvarez Seco, Teresa
15 Jørgensen, Palle E. T.
15 Malamud, Mark M.
15 Winkler, Henrik
13 Bolotnikov, Vladimir
13 Mogilevskii, Vadim
13 Shi, Yuming
12 Gesztesy, Fritz
12 Tarcsay, Zsigmond
12 Titkos, Tamás
12 Trunk, Carsten
12 Tsekanovskii, Eduard R.
10 Ammar, Aymen
10 Sebestyén, Zoltán
9 Dym, Harry
9 Kaltenbäck, Michael
9 Langer, Matthias
9 Mnif, Maher
9 Staffans, Olof Johan
9 Wietsma, Hendrik Luit
8 Arlins’kyĭ, Yuriĭ Moĭseĭovych
8 Arov, Damir Zyamovich
8 Ćurgus, Branko
8 Gheondea, Aurelian
8 Jeribi, Aref
8 Lewkowicz, Izchak
7 Albeverio, Sergio A.
7 Ball, Joseph Anthony
7 Duggal, Bhagwati Prashad
7 Luger, Annemarie
7 Neidhardt, Hagen
7 Ren, Guojing
7 Tian, Feng
6 Azizov, Tomas Ya.
6 Bruk, Vladislav Moiseevich
6 Constantinescu, Tiberiu
6 Kimsey, David Patrick
6 Kurasov, Pavel B.
6 Liu, Yan
6 Marcantognini, Stefania A. M.
6 Rovnyak, James
6 Wojtylak, Michał
5 Belyi, Sergey V.
5 Dubi, Chen
5 Kurula, Mikael
5 Lotoreichik, Vladimir
5 Naboko, Serguei N.
5 Pankrashkin, Konstantin
5 Remling, Christian
5 Rodman, Leiba X.
5 Silva, Luis O.
5 Sun, Huaqing
5 Tretter, Christiane
4 Baidiuk, Dmytro V.
4 Brown, B. Malcolm
4 Cho, Ilwoo
4 Coddington, Earl A.
4 Derevyagin, Maxim S.
4 Fleige, Andreas
4 Gantner, Jonathan
4 Mitrea, Marius
4 Möller, Manfred
4 Popov, Igor’ Yur’evich
4 Qi, Jiangang
4 Rohleder, Jonathan
4 Stochel, Jan
4 Teschl, Gerald
4 Vinnikov, Victor
4 Volok, Dan
3 Abu-Ghanem, Khaled
3 Acharya, Keshav Raj
3 Baklouti, Hamadi
3 Baranov, Anton D.
3 Berger, Thomas K.
3 Chafai, Ezzeddine
3 Chamkha, Yosra
3 Corso, Rosario
3 Feki, Kais
3 Gao, Chenghua
3 Holzmann, Markus
3 Kheifets, Alexander
3 Kostenko, Aleksey S.
3 Kuzhel, Sergii
3 Lilleberg, Lassi
3 Maestripieri, Alejandra L.
3 Makarov, Konstantin A.
3 Morán, María Dolores
3 Möws, Roland
3 Posilicano, Andrea
...and 319 more Authors
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Cited in 130 Serials

70 Integral Equations and Operator Theory
64 Linear Algebra and its Applications
41 Journal of Functional Analysis
36 Journal of Mathematical Analysis and Applications
34 Complex Analysis and Operator Theory
27 Journal of Differential Equations
27 Mathematische Nachrichten
15 Proceedings of the American Mathematical Society
13 Journal of Mathematical Sciences (New York)
11 Acta Mathematica Hungarica
11 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics
11 Mediterranean Journal of Mathematics
10 Positivity
9 Linear and Multilinear Algebra
9 Indagationes Mathematicae. New Series
7 Mathematical Notes
7 Advances in Mathematics
6 Journal d’Analyse Mathématique
6 Periodica Mathematica Hungarica
6 Transactions of the American Mathematical Society
5 Journal of Mathematical Physics
5 Monatshefte für Mathematik
5 Opuscula Mathematica
5 Annales Henri Poincaré
5 Advances in Operator Theory
4 Journal of Soviet Mathematics
4 Banach Journal of Mathematical Analysis
3 Letters in Mathematical Physics
3 Applied Mathematics and Computation
3 Glasgow Mathematical Journal
3 Results in Mathematics
3 Russian Journal of Mathematical Physics
3 St. Petersburg Mathematical Journal
3 Journal of Applied Mathematics and Computing
3 ISRN Mathematical Analysis
2 Applicable Analysis
2 Mathematical Methods in the Applied Sciences
2 Ukrainian Mathematical Journal
2 Journal of Geometry and Physics
2 Annali di Matematica Pura ed Applicata. Serie Quarta
2 Archiv der Mathematik
2 Collectanea Mathematica
2 Functional Analysis and its Applications
2 Journal of Approximation Theory
2 Journal of Computational and Applied Mathematics
2 Mathematische Annalen
2 Proceedings of the Edinburgh Mathematical Society. Series II
2 Systems & Control Letters
2 Zeitschrift für Analysis und ihre Anwendungen
2 Constructive Approximation
2 The Journal of Geometric Analysis
2 Russian Mathematics
2 Kyushu Journal of Mathematics
2 Turkish Journal of Mathematics
2 Abstract and Applied Analysis
2 Mathematical Physics, Analysis and Geometry
2 Milan Journal of Mathematics
2 Analysis and Applications (Singapore)
2 Analysis and Mathematical Physics
2 Carpathian Mathematical Publications
2 Special Matrices
1 Analysis Mathematica
1 Archive for Rational Mechanics and Analysis
1 Bulletin of the Australian Mathematical Society
1 Communications in Mathematical Physics
1 Israel Journal of Mathematics
1 Reports on Mathematical Physics
1 Rocky Mountain Journal of Mathematics
1 Arkiv för Matematik
1 Mathematics of Computation
1 Reviews in Mathematical Physics
1 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie IV
1 Canadian Mathematical Bulletin
1 Czechoslovak Mathematical Journal
1 Manuscripta Mathematica
1 Mathematische Zeitschrift
1 Mathematika
1 Publications of the Research Institute for Mathematical Sciences, Kyoto University
1 Quaestiones Mathematicae
1 Quarterly of Applied Mathematics
1 Rendiconti del Circolo Matemàtico di Palermo. Serie II
1 Siberian Mathematical Journal
1 Tokyo Journal of Mathematics
1 Transactions of the Moscow Mathematical Society
1 Rendiconti di Matematica e delle sue Applicazioni. Serie VII
1 Acta Applicandae Mathematicae
1 Journal of Theoretical Probability
1 Applied Mathematics Letters
1 Mathematical and Computer Modelling
1 Communications in Partial Differential Equations
1 Journal de Mathématiques Pures et Appliquées. Neuvième Série
1 Expositiones Mathematicae
1 International Journal of Robust and Nonlinear Control
1 Potential Analysis
1 Applied and Computational Harmonic Analysis
1 The New York Journal of Mathematics
1 Boletín de la Sociedad Matemática Mexicana. Third Series
1 Matematychni Metody ta Fizyko-Mekhanichni Polya
1 Arab Journal of Mathematical Sciences
1 Doklady Mathematics
...and 30 more Serials
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Cited in 40 Fields

500 Operator theory (47-XX)
132 Ordinary differential equations (34-XX)
131 Functional analysis (46-XX)
91 Functions of a complex variable (30-XX)
49 Partial differential equations (35-XX)
44 Quantum theory (81-XX)
39 Linear and multilinear algebra; matrix theory (15-XX)
27 Systems theory; control (93-XX)
21 Difference and functional equations (39-XX)
20 Harmonic analysis on Euclidean spaces (42-XX)
15 Integral transforms, operational calculus (44-XX)
12 Several complex variables and analytic spaces (32-XX)
12 Dynamical systems and ergodic theory (37-XX)
11 Approximations and expansions (41-XX)
10 Measure and integration (28-XX)
10 Probability theory and stochastic processes (60-XX)
7 Real functions (26-XX)
7 Special functions (33-XX)
7 Numerical analysis (65-XX)
6 Combinatorics (05-XX)
6 Global analysis, analysis on manifolds (58-XX)
5 Number theory (11-XX)
5 Potential theory (31-XX)
5 Abstract harmonic analysis (43-XX)
5 Integral equations (45-XX)
4 Statistics (62-XX)
4 Optics, electromagnetic theory (78-XX)
3 History and biography (01-XX)
3 Topological groups, Lie groups (22-XX)
3 Information and communication theory, circuits (94-XX)
2 General topology (54-XX)
2 Statistical mechanics, structure of matter (82-XX)
1 Mathematical logic and foundations (03-XX)
1 Field theory and polynomials (12-XX)
1 Commutative algebra (13-XX)
1 Associative rings and algebras (16-XX)
1 Nonassociative rings and algebras (17-XX)
1 Calculus of variations and optimal control; optimization (49-XX)
1 Algebraic topology (55-XX)
1 Mechanics of deformable solids (74-XX)

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