Edit Profile Weidmann, Joachim Compute Distance To: Compute Author ID: weidmann.joachim Published as: Weidmann, J.; Weidmann, Joachim External Links: MGP · Wikidata · GND Documents Indexed: 44 Publications since 1965, including 6 Books Reviewing Activity: 40 Reviews all top 5 Co-Authors 28 single-authored 4 Stolz, Gunter 4 Veselić, Krešimir 2 Brasche, Johannes Friedemann 2 Everitt, William Norrie 2 Jörgens, Konrad 2 Neidhardt, Hagen 1 Bailey, Paul B. 1 Buschmann, Dirk 1 Giertz, Magnus 1 Gustafson, Karl Edwin 1 Poerschke, Thomas Michael 1 Tafel, Werner 1 Voigt, Jurgen 1 Zettl, Anton all top 5 Serials 8 Mathematische Zeitschrift 4 Mathematische Annalen 3 Journal für die Reine und Angewandte Mathematik 2 Results in Mathematics 2 Bulletin of the American Mathematical Society 2 Lecture Notes in Mathematics 1 Communications on Pure and Applied Mathematics 1 Journal of Mathematical Analysis and Applications 1 Acta Scientiarum Mathematicarum 1 Integral Equations and Operator Theory 1 Journal of Functional Analysis 1 Manuscripta Mathematica 1 Mathematica Scandinavica 1 Analysis 1 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 1 Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica 1 Graduate Texts in Mathematics all top 5 Fields 29 Operator theory (47-XX) 14 Partial differential equations (35-XX) 12 Ordinary differential equations (34-XX) 2 History and biography (01-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral equations (45-XX) 1 Functional analysis (46-XX) 1 Quantum theory (81-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH 38 Publications have been cited 1,373 times in 1,124 Documents Cited by ▼ Year ▼ Linear operators in Hilbert spaces. Transl. by Joseph Szücs. Zbl 0434.47001Weidmann, Joachim 408 1980 Spectral theory of ordinary differential operators. Zbl 0647.47052Weidmann, Joachim 311 1987 Lineare Operatoren in Hilberträumen. Zbl 0344.47001Weidmann, Joachim 82 1976 On the essential spectrum. Zbl 0189.44104Gustafson, K.; Weidmann, J. 56 1969 Zur Spektraltheorie von Sturm-Liouville-Operatoren. Zbl 0168.12301Weidmann, J. 53 1967 The virial theorem and its application to the spectral theory of SChrödinger operators. Zbl 0156.23304Weidmann, J. 46 1967 Oszillationsmethoden für Systeme gewöhnlicher Differentialgleichungen. Zbl 0206.10002Weidmann, J. 45 1971 Regular approximations of singular Sturm-Liouville problems. Zbl 0778.34015Bailey, P. B.; Everitt, W. N.; Weidmann, J.; Zettl, A. 37 1993 Linear operators in Hilbert spaces. Part II: Applications. Zbl 1025.47001Weidmann, Joachim 32 2003 Some remarks on a separation and limit-point criterion of second-order, ordinary differential expressions. Zbl 0235.34045Everitt, W. N.; Giertz, M.; Weidmann, J. 28 1973 Linear operators in Hilbert spaces. Part I: Foundations. Zbl 0972.47002Weidmann, Joachim 25 2000 One-dimensional Schrödinger operators with local point interactions. Zbl 0833.34082Buschmann, D.; Stolz, G.; Weidmann, J. 21 1995 Absolut stetiges Spektrum bei Sturm-Liouville-Operatoren und Dirac-Systemen. Zbl 0479.34007Weidmann, Joachim 21 1982 Spectral properties of Hamiltonian operators. Zbl 0248.35002Jörgens, Konrad; Weidmann, Joachim 18 1973 Expansions in generalized eigenfunctions of selfadjoint operators. Zbl 0661.47021Poerschke, Thomas; Stolz, Günter; Weidmann, Joachim 16 1989 Approximation of isolated eigenvalues of general singular ordinary differential operators. Zbl 0842.47029Stolz, Günter; Weidmann, Joachim 15 1995 Approximation of isolated eigenvalues of ordinary differential operators. Zbl 0781.34052Stolz, Günter; Weidmann, Joachim 15 1993 Stetige Abhängigkeit der Eigenwerte und Eigenfunktionen elliptischer Differentialoperatoren vom Gebiet. Zbl 0526.35061Weidmann, Joachim 15 1984 Carlemanoperatoren. Zbl 0185.20401Weidmann, J. 15 1970 Strong operator convergence and spectral theory of ordinary differential operators. Zbl 0964.47004Weidmann, Joachim 13 1997 Monotone continuity of the spectral resolution and the eigenvalues. Zbl 0448.47008Weidmann, Joachim 10 1980 Strong Carleman operators are of Hilbert-Schmidt type. Zbl 0165.49301Weidmann, J. 10 1968 Spectral theory of Sturm-Liouville operators approximation by regular problems. Zbl 1098.34065Weidmann, Joachim 9 2005 Potential scattering in a homogeneous electrostatic field. Zbl 0364.35042Veselic, Kresimir; Weidmann, Joachim 9 1977 On the point spectrum of selfadjoint extensions. Zbl 0791.47005Brasche, Johannes; Neidhardt, Hagen; Weidmann, Joachim 8 1993 Continuity of the eigenvalues of self-adjoint operators with respect to the strong operator topology. Zbl 0476.47008Weidmann, Joachim 8 1980 Asymptotic estimates of wave functions and the existence of wave operators. Zbl 0286.47006Veselic, Kresimir; Weidmann, Joachim 8 1974 On the continuous spectrum of Schrödinger operators. Zbl 0138.35804Weidmann, J. 8 1966 Existenz der Wellenoperatoren für eine allgemeine Klasse von Operatoren. Zbl 0258.47011Veselic, Kresimir; Weidmann, Joachim 7 1973 Zur Existenz der Wellenoperatoren. Zbl 0252.35061Jörgens, Konrad; Weidmann, Joachim 5 1973 Note to the paper by R. Hempel, A. M. Hinz, and H. Kalf: On the essential spectrum of Schrödinger operators with spherically symmetric potentials. Zbl 0629.35029Weidmann, J. 4 1987 Integraloperatoren der Spurklasse. Zbl 0134.31901Weidmann, J. 4 1966 On the spectra of selfadjoint extensions. Zbl 0797.47002Brasche, Johannes; Neidhardt, Hagen; Weidmann, Joachim 3 1993 Spectral theory of partial differential operators. Zbl 0313.47032Weidmann, Joachim 3 1975 Ein Satz über nukleare Operatoren im Hilbertraum. Zbl 0131.33002Weidmann, Joachim 2 1965 Uniform nonsubordinary and the absolutely continuous spectrum. Zbl 0848.34068Weidmann, Joachim 1 1996 Scattering theory for partial differential operators. Zbl 0377.47010Weidmann, Joachim 1 1977 Verteilung der Eigenwerte für eine Klasse von Integraloperatoren in \(L_2(a,b)\). Zbl 0307.34022Weidmann, Joachim 1 1975 Spectral theory of Sturm-Liouville operators approximation by regular problems. Zbl 1098.34065Weidmann, Joachim 9 2005 Linear operators in Hilbert spaces. Part II: Applications. Zbl 1025.47001Weidmann, Joachim 32 2003 Linear operators in Hilbert spaces. Part I: Foundations. Zbl 0972.47002Weidmann, Joachim 25 2000 Strong operator convergence and spectral theory of ordinary differential operators. Zbl 0964.47004Weidmann, Joachim 13 1997 Uniform nonsubordinary and the absolutely continuous spectrum. Zbl 0848.34068Weidmann, Joachim 1 1996 One-dimensional Schrödinger operators with local point interactions. Zbl 0833.34082Buschmann, D.; Stolz, G.; Weidmann, J. 21 1995 Approximation of isolated eigenvalues of general singular ordinary differential operators. Zbl 0842.47029Stolz, Günter; Weidmann, Joachim 15 1995 Regular approximations of singular Sturm-Liouville problems. Zbl 0778.34015Bailey, P. B.; Everitt, W. N.; Weidmann, J.; Zettl, A. 37 1993 Approximation of isolated eigenvalues of ordinary differential operators. Zbl 0781.34052Stolz, Günter; Weidmann, Joachim 15 1993 On the point spectrum of selfadjoint extensions. Zbl 0791.47005Brasche, Johannes; Neidhardt, Hagen; Weidmann, Joachim 8 1993 On the spectra of selfadjoint extensions. Zbl 0797.47002Brasche, Johannes; Neidhardt, Hagen; Weidmann, Joachim 3 1993 Expansions in generalized eigenfunctions of selfadjoint operators. Zbl 0661.47021Poerschke, Thomas; Stolz, Günter; Weidmann, Joachim 16 1989 Spectral theory of ordinary differential operators. Zbl 0647.47052Weidmann, Joachim 311 1987 Note to the paper by R. Hempel, A. M. Hinz, and H. Kalf: On the essential spectrum of Schrödinger operators with spherically symmetric potentials. Zbl 0629.35029Weidmann, J. 4 1987 Stetige Abhängigkeit der Eigenwerte und Eigenfunktionen elliptischer Differentialoperatoren vom Gebiet. Zbl 0526.35061Weidmann, Joachim 15 1984 Absolut stetiges Spektrum bei Sturm-Liouville-Operatoren und Dirac-Systemen. Zbl 0479.34007Weidmann, Joachim 21 1982 Linear operators in Hilbert spaces. Transl. by Joseph Szücs. Zbl 0434.47001Weidmann, Joachim 408 1980 Monotone continuity of the spectral resolution and the eigenvalues. Zbl 0448.47008Weidmann, Joachim 10 1980 Continuity of the eigenvalues of self-adjoint operators with respect to the strong operator topology. Zbl 0476.47008Weidmann, Joachim 8 1980 Potential scattering in a homogeneous electrostatic field. Zbl 0364.35042Veselic, Kresimir; Weidmann, Joachim 9 1977 Scattering theory for partial differential operators. Zbl 0377.47010Weidmann, Joachim 1 1977 Lineare Operatoren in Hilberträumen. Zbl 0344.47001Weidmann, Joachim 82 1976 Spectral theory of partial differential operators. Zbl 0313.47032Weidmann, Joachim 3 1975 Verteilung der Eigenwerte für eine Klasse von Integraloperatoren in \(L_2(a,b)\). Zbl 0307.34022Weidmann, Joachim 1 1975 Asymptotic estimates of wave functions and the existence of wave operators. Zbl 0286.47006Veselic, Kresimir; Weidmann, Joachim 8 1974 Some remarks on a separation and limit-point criterion of second-order, ordinary differential expressions. Zbl 0235.34045Everitt, W. N.; Giertz, M.; Weidmann, J. 28 1973 Spectral properties of Hamiltonian operators. Zbl 0248.35002Jörgens, Konrad; Weidmann, Joachim 18 1973 Existenz der Wellenoperatoren für eine allgemeine Klasse von Operatoren. Zbl 0258.47011Veselic, Kresimir; Weidmann, Joachim 7 1973 Zur Existenz der Wellenoperatoren. Zbl 0252.35061Jörgens, Konrad; Weidmann, Joachim 5 1973 Oszillationsmethoden für Systeme gewöhnlicher Differentialgleichungen. Zbl 0206.10002Weidmann, J. 45 1971 Carlemanoperatoren. Zbl 0185.20401Weidmann, J. 15 1970 On the essential spectrum. Zbl 0189.44104Gustafson, K.; Weidmann, J. 56 1969 Strong Carleman operators are of Hilbert-Schmidt type. Zbl 0165.49301Weidmann, J. 10 1968 Zur Spektraltheorie von Sturm-Liouville-Operatoren. Zbl 0168.12301Weidmann, J. 53 1967 The virial theorem and its application to the spectral theory of SChrödinger operators. Zbl 0156.23304Weidmann, J. 46 1967 On the continuous spectrum of Schrödinger operators. Zbl 0138.35804Weidmann, J. 8 1966 Integraloperatoren der Spurklasse. Zbl 0134.31901Weidmann, J. 4 1966 Ein Satz über nukleare Operatoren im Hilbertraum. Zbl 0131.33002Weidmann, Joachim 2 1965 all cited Publications top 5 cited Publications all top 5 Cited by 1,155 Authors 30 Gesztesy, Fritz 29 Zettl, Anton 26 Jeribi, Aref 25 Shi, Yuming 21 Sun, Jiong 19 Teschl, Gerald 17 Stochel, Jan 16 Behrndt, Jussi 16 Weidmann, Joachim 15 Sun, Huaqing 14 Exner, Pavel 14 Neidhardt, Hagen 14 Qi, Jiangang 14 Schmidt, Karl Michael 14 Simon, Barry 13 Malamud, Mark M. 12 Allahverdiev, Bilender Paşaoğlu 12 Jung, Il Bong 12 Kostenko, Aleksey S. 12 Ren, Guojing 11 Everitt, William Norrie 10 Behncke, Horst 10 Jabłoński, Zenon Jan 10 Korotkov, Vitalii Borisovich 10 Krejčiřík, David 10 Marletta, Marco 9 El-Gebeily, Mohamed A. 9 Hinton, Don Barker 9 Lenz, Daniel H. 8 Herbst, Ira W. 8 Kong, Qingkai 8 Latrach, Khalid 8 O’Regan, Donal 8 Stolz, Gunter 8 Trunk, Carsten 8 Wei, Guangsheng 7 Binding, Paul Anthony 7 Brasche, Johannes Friedemann 7 Chen, Shaozhu 7 Hao, Xiaoling 7 Klaus, Martin 7 Latushkin, Yuri 7 Lotoreichik, Vladimir 7 Remling, Christian 7 Tretter, Christiane 7 Wu, Hongyou 6 Abdmouleh, Faiçal 6 Ao, Jijun 6 Budzyński, Piotr 6 del Río Castillo, Rafael René 6 Evans, William Desmond 6 Hempel, Rainer 6 Hinz, Andreas M. 6 Kalf, Hubert 6 Kolb, Martin 6 Möller, Manfred 6 Schechter, Martin 6 Silva, Luis O. 6 Šimon Hilscher, Roman 6 Wang, Aiping 6 Weder, Ricardo A. 5 Currie, Sonja 5 Eckhardt, Jonathan 5 Holden, Helge 5 Leinfelder, Herbert 5 Liu, Yan 5 Lukic, Milivoje 5 Moalla, Nedra 5 Mogilevskii, Vadim 5 Naboko, Serguei N. 5 Rejto, P. A. 5 Stollmann, Peter 5 Šťovíček, Pavel 5 Sukhtayev, Alim 5 Sukochev, Fedor Anatol’evich 5 Tuna, Hüseyin 5 Veselić, Krešimir 5 Watson, Bruce Alastair 5 Zhang, Maozhu 5 Zheng, Zhaowen 4 Albeverio, Sergio A. 4 Ammar, Aymen 4 Ben-Artzi, Matania 4 Bögli, Sabine 4 Brown, B. Malcolm 4 Callier, Frank M. 4 Choe, Boo Rim 4 Daners, Daniel 4 Dehici, Abdelkader 4 Donninger, Roland 4 Keller, Matthias 4 Kirsten, Klaus 4 Kiselev, Alexander A. 4 Koo, Hyungwoon 4 Kubrusly, Carlos S. 4 Li, Kun 4 Lutgen, Joseph P. 4 Makarov, Konstantin A. 4 Mitrea, Marius 4 Mnif, Maher ...and 1,055 more Authors all top 5 Cited in 253 Serials 103 Journal of Mathematical Analysis and Applications 57 Journal of Functional Analysis 49 Journal of Differential Equations 45 Integral Equations and Operator Theory 42 Journal of Mathematical Physics 41 Communications in Mathematical Physics 35 Mathematische Zeitschrift 35 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 26 Proceedings of the American Mathematical Society 24 Mathematische Nachrichten 23 Journal of Computational and Applied Mathematics 19 Transactions of the American Mathematical Society 18 Linear Algebra and its Applications 15 Mathematische Annalen 14 Letters in Mathematical Physics 14 Results in Mathematics 13 Applied Mathematics and Computation 11 Reviews in Mathematical Physics 11 Advances in Mathematics 11 Annales de l’Institut Henri Poincaré. Physique Théorique 11 Annales Henri Poincaré 10 Publications of the Research Institute for Mathematical Sciences, Kyoto University 9 Mathematical Methods in the Applied Sciences 9 Numerische Mathematik 9 Complex Analysis and Operator Theory 8 Computers & Mathematics with Applications 8 Manuscripta Mathematica 8 Abstract and Applied Analysis 7 Duke Mathematical Journal 7 Journal of Approximation Theory 7 Siberian Mathematical Journal 6 Reports on Mathematical Physics 6 Rocky Mountain Journal of Mathematics 6 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 6 Mathematical Physics, Analysis and Geometry 6 Mediterranean Journal of Mathematics 6 Advances in Difference Equations 6 Boundary Value Problems 5 Applicable Analysis 5 International Journal of Theoretical Physics 5 Israel Journal of Mathematics 5 Mathematical Notes 5 Journal of Geometry and Physics 5 Annali di Matematica Pura ed Applicata. Serie Quarta 5 Automatica 5 Systems & Control Letters 5 Acta Applicandae Mathematicae 5 Probability Theory and Related Fields 5 Journal de Mathématiques Pures et Appliquées. Neuvième Série 5 Calculus of Variations and Partial Differential Equations 5 Journal of Spectral Theory 5 Nonlinear Analysis. Theory, Methods & Applications 4 Archive for Rational Mechanics and Analysis 4 Journal d’Analyse Mathématique 4 Linear and Multilinear Algebra 4 Functional Analysis and its Applications 4 Memoirs of the American Mathematical Society 4 Monatshefte für Mathematik 4 Acta Mathematicae Applicatae Sinica. English Series 4 Annals of Physics 4 Indagationes Mathematicae. New Series 4 Journal of Evolution Equations 3 Journal of Statistical Physics 3 Ukrainian Mathematical Journal 3 Annales de l’Institut Fourier 3 The Annals of Statistics 3 Computing 3 Glasgow Mathematical Journal 3 Numerical Functional Analysis and Optimization 3 Proceedings of the Edinburgh Mathematical Society. Series II 3 SIAM Journal on Control and Optimization 3 Stochastic Analysis and Applications 3 Constructive Approximation 3 Communications in Partial Differential Equations 3 SIAM Journal on Mathematical Analysis 3 International Journal of Geometric Methods in Modern Physics 3 Bulletin of the American Mathematical Society 3 Operators and Matrices 2 Communications on Pure and Applied Mathematics 2 Physics Letters. A 2 Theoretical and Mathematical Physics 2 Zeitschrift für Angewandte Mathematik und Mechanik (ZAMM) 2 Mathematics of Computation 2 Chaos, Solitons and Fractals 2 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg 2 Acta Mathematica 2 The Annals of Probability 2 Archiv der Mathematik 2 BIT 2 Journal of Econometrics 2 Mathematica Slovaca 2 Mathematika 2 Quaestiones Mathematicae 2 Quarterly of Applied Mathematics 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Advances in Applied Mathematics 2 Zeitschrift für Analysis und ihre Anwendungen 2 Annals of Global Analysis and Geometry 2 Applied Numerical Mathematics 2 Applied Mathematics Letters ...and 153 more Serials all top 5 Cited in 54 Fields 579 Operator theory (47-XX) 366 Ordinary differential equations (34-XX) 294 Partial differential equations (35-XX) 223 Quantum theory (81-XX) 67 Functional analysis (46-XX) 56 Numerical analysis (65-XX) 52 Global analysis, analysis on manifolds (58-XX) 51 Probability theory and stochastic processes (60-XX) 45 Difference and functional equations (39-XX) 41 Statistical mechanics, structure of matter (82-XX) 36 Dynamical systems and ergodic theory (37-XX) 31 Systems theory; control (93-XX) 26 Differential geometry (53-XX) 24 Harmonic analysis on Euclidean spaces (42-XX) 23 Linear and multilinear algebra; matrix theory (15-XX) 21 Calculus of variations and optimal control; optimization (49-XX) 20 Integral equations (45-XX) 19 Relativity and gravitational theory (83-XX) 14 Special functions (33-XX) 13 Several complex variables and analytic spaces (32-XX) 12 Topological groups, Lie groups (22-XX) 12 Mechanics of deformable solids (74-XX) 11 Combinatorics (05-XX) 10 Functions of a complex variable (30-XX) 10 Approximations and expansions (41-XX) 10 Integral transforms, operational calculus (44-XX) 10 Fluid mechanics (76-XX) 10 Optics, electromagnetic theory (78-XX) 9 Real functions (26-XX) 9 Potential theory (31-XX) 8 Statistics (62-XX) 8 Mechanics of particles and systems (70-XX) 7 Computer science (68-XX) 6 Measure and integration (28-XX) 6 Operations research, mathematical programming (90-XX) 6 Biology and other natural sciences (92-XX) 5 Mathematical logic and foundations (03-XX) 4 Algebraic geometry (14-XX) 4 Abstract harmonic analysis (43-XX) 4 Manifolds and cell complexes (57-XX) 3 History and biography (01-XX) 3 Number theory (11-XX) 3 Sequences, series, summability (40-XX) 3 Information and communication theory, circuits (94-XX) 2 Convex and discrete geometry (52-XX) 2 General topology (54-XX) 2 Classical thermodynamics, heat transfer (80-XX) 2 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Associative rings and algebras (16-XX) 1 Nonassociative rings and algebras (17-XX) 1 Category theory; homological algebra (18-XX) 1 \(K\)-theory (19-XX) 1 Astronomy and astrophysics (85-XX) 1 Geophysics (86-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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