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July 2019 International Workshop on Operator Theory and its Applications (IWOTA 2019),
Instituto Superior Técnico, Lisbon (Portugal)
Oct. 2018 Festkolloquium in Honor of Steffen Roch, TU Darmstadt
July 2018 6th Summer Workshop on Operator Theory, Krakow (Poland)
March 2018 University of Lisbon (Portugal)
March 2018 Instituto Superior Técnico, Lisbon (Portugal)
Aug. 2017 Organization (together with Daniel Potts and Peter Stollmann) of the
International Workshop on Operator Theory and its Applications (IWOTA 2017),
TU Chemnitz
June 2017 Workshop "Functional Analysis and Operator Theory in Honor of Lewis A. Coburn",
Leibniz Universität Hannover
Nov. 2016 Universität Wien (Austria)
Nov. 2016 TU Hamburg
Oct. 2016 Colloquium in Honor of Bernd Silbermann, TU Chemnitz
Sept. 2016 University of Lund (Sweden)
June 2016 26th International Conference on Operator Theory, Timisoara (Romania)
June 2016 Conference "Time-Frequency Analysis and Related Topics", Strobl (Austria)
Sept. 2015 Fourth Najman Conference on Spectral Problems for Operators and Matrices,
Opatija (Croatia)
July 2015 International Workshop on Operator Theory and its Applications (IWOTA 2015),
Tbilisi (Georgia)
May 2015 SIAM National Student Chapter Conference 2015, University of Reading (England)
March 2015 Festkolloquium in Honor of Elias Wegert, TU Bergakademie Freiberg
July 2014 International Workshop on Operator Theory and its Applications (IWOTA 2014),
Vrije Universiteit, Amsterdam (The Netherlands)
June 2014 Workshop "Computations in infinite dimensions: challenges in a continuous world"
Kavli Royal Society International Centre at Chicheley Hall, Chicheley (England)
March 2014 85. Jahrestagung der GAMM, Erlangen
Sept. 2013 Fourth Annual Conference of the Georgian Mathematical Union, Batumi (Georgia)
June 2013 Mecklenburger Workshop "Approximationsmethoden und schnelle Algorithmen"
in Honor of Manfred Tasche, Schloss Hasenwinkel
Jan. 2013 Universität Jena
Dec. 2012 Ludwig Schläfli Lecture, Universität Bern (Switzerland)
Oct. 2012 LAA Editorial Board Meeting in Honor of Hans Schneider, Madison, Wisconsin (USA)
Sept. 2012 Summer School on Applied Analysis, Chemnitz
Sept. 2012 International workshop on Structured Numerical Linear and Multilinear Algebra,
Katholieke Universiteit Leuven (Belgium)
May 2012 Universität Leipzig
Nov. 2011 University of Helsinki (Finland)
Sept. 2011 Conference "Recent Trends in Analysis" in Honor of Nikolai K. Nikolski on his 70th Birthday,
Université Bordeaux 1, Bordeaux (France)
Aug. 2011 17th Conference of the International Linear Algebra Society, Braunschweig
July 2011 Conference "Foundations of Computational Mathematics", Budapest (Hungary)
March 2011 Organization (together with Peter Junghannns and Daniel Potts) of the
workshop "Functional Analysis and Operator Theory" in Honor
of Bernd Silbermann on his 70th Birthday, Altenberg/Erzgebirge
June 2010 Institut für Biomathematik und Biometrie, Helmholtz Zentrum, München
Feb. 2010 University of Cambridge (England)
Feb. 2010 Wales Workshop on Analytical Computational Mathematics, Cardiff (Wales)
Jan. 2010 Israel Gohberg Memorial Colloquium, Vrije Universiteit, Amsterdam (The Netherlands)
Dec. 2009 Brian Davies 65th Birthday Conference, King's College, London (England)
Oct. 2009 Organization (together with Peter Junghanns and Daniel Potts) of the
Workshop on Advances and Trends in Integral Equations in Memory
of Siegfried Prössdorf, Wasserschloss Klaffenbach, Chemnitz
Sept. 2009 ÖMG-DMV Kongress, Graz (Austria)
June 2009 Eighth European Conference on Numerical Mathematics and Advanced Applications,
Uppsala University, Uppsala (Sweden)
May 2009 Dresdner Mathematisches Seminar, TU Dresden
March 2009 Workshop on Approximation Theory and Signal Analysis, Lindau im Bodensee
Sept. 2008 STAUNT, Universität Rostock
July 2008 International Workshop on Operator Theory and its Applications (IWOTA 2008),
The College of William and Mary, Williamsburg, Virginia (USA)
June 2008 15th Conference of the International Linear Algebra Society, Cancun (Mexico)
March 2008 North British Functional Analysis Seminar, University of York (England)
Dec. 2007 Institut Elie Cartan, Université Henri Poincaré Nancy I, Nancy (France)
Sept. 2007 Organization (together with Eugene Shargorodsky and Percy Deift)
of the ICMS workshop "The Riemann-Hilbert Problem and Toeplitz Operators",
Heriot Watt University, Edinburgh (Scotland)
June 2007 University of Reading (England)
May 2007 University of Helsinki (Finland)
May 2007 Finnish Mathematical Society Colloquium, Helsinki (Finland)
April 2007 13. Südostdeutsches Kolloquium zur Numerischen Mathematik, TU Bergakademie Freiberg
Oct. 2006 Schur Analysis Workshop in Honor of Vladimir Dubovoj, Leipzig
Sept. 2006 Summer School on Applied Analysis, Chemnitz
Aug. 2006 International Workshop on Operator Theory and its Applications (IWOTA 2006),
Seoul National University, Seoul (Korea)
Aug. 2005 London Mathematical Society Symposium "Operator Theory and Spectral Analysis",
Durham (England)
July 2005 Conference "Operator Theory, Function Spaces and Applications
in Honor of Frank-Olme Speck", Aveiro (Portugal)
June 2005 International Conference "Matrix Methods and Operator Equations", Moscow (Russia)
May 2005 Tag der Funktionentheorie, TU Bergakademie Freiberg
Sept. 2004 Jahrestagung der Deutschen Mathematiker-Vereinigung, Heidelberg
July 2004 International Workshop on Operator Theory and its Applications (IWOTA 2004),
University of Newcastle, Newcastle upon Tyne (England)
June 2004 5th International Workshop on Accurate Solution of Eigenvalue Problems,
Fern-Universität Hagen
March 2004 75. Jahrestagung der GAMM, Dresden
Oct. 2003 Universidad Autónoma del Estado de Morelos, Cuernavaca (Mexico)
Sept. 2003 CINVESTAV del I.P.N., Mexico City (Mexico)
July 2003 International Workshop on Infinite-Dimensional Dynamical Systems,
University of Exeter (England)
May 2003 ETNA's tenth birthday conference "ETNA: Following the Flows of Numerical Analysis",
Kent State University, Kent, Ohio (USA)
Sept. 2002 MSRI workshop "Recent Progress in Random Matrix Theory and Its Applications",
Mathematical Sciences Research Institute, Berkeley, California (USA)
Sept. 2002 GAMM workshop "Numerical Linear Algebra with special
emphasis on Multilevel and Krylov Subspace Methods", Universität Bielefeld
Aug. 2002 International Workshop on Operator Theory and its Applications (IWOTA 2002),
Virginia Tech, Blacksburg, Virginia (USA)
May 2002 International Conference "Structured Matrices", The Chinese University of Hong Kong
and The University of Hong Kong, Hong Kong (China)
April 2002 TU Darmstadt
Jan. 2002 International Conference "Factorization, Singular Operators and Related Problems
in Honor of Georgii Litvinchuk", University of Madeira, Funchal, Madeira Island (Portugal)
Nov. 2001 Fern-Universität Hagen
Oct. 2001 International Conference ''Numerical Algorithms in Honor of Claude Brezinski'',
Marrakesh (Morocco)
Sept. 2001 GAMM workshop ''Numerical Methods for Structured and Random Matrices'', TU Berlin
Aug. 2001 AMS-IMS-SIAM Summer Research Conference ''Fast Algorithms in Mathematics,
Computer Science and Engineering'', Mount Holyoke College, South Hadley, Massachusetts (USA)
June 2001 Universität Bremen
April 2001 Max Planck Institut Leipzig
April 2001 Organization (together with Peter Junghanns) of the International Conference
"Toeplitz Matrices in Honor of Bernd Silbermann", Pobershau/Erzgebirge
Jan. 2001 Colloquium ''Operator Theory and Applications in Honor of Israel Gohberg'', TU Wien (Austria)
Jan. 2001 Universität Karlsruhe
Sept. 2000 Workshop ''Structured Matrices: Analysis, Algorithms, and Applications'', Cortona (Italy)
Sept. 2000 International Workshop on Operator Theory and its Applications (IWOTA Portugal 2000),
Universidade do Algarve, Faro (Portugal)
June 2000 International Workshop on Operator Theory and its Applications (IWOTA 2000),
Université Bordeaux 1, Bordeaux (France)
May 2000 Università di Cagliari, Sardinia (Italy)
May 2000 Università di Pisa (Italy)
April 2000 TU Bergakademie Freiberg
March 2000 King's College London (England)
March 2000 University of Oxford (England)
March 2000 University of Sussex at Brighton (England)
Mark Embree, I, and Marco Contedini (in the background: Stonehenge)
Jan. 2000 Pathani Samanta Planetarium, Bhubaneshwar, Orissa (India)
Jan. 2000 Conference ''Functional Analysis and Linear Algebra'', Indian Statistical Institute, New Delhi (India)
Nov. 1999 Belfast Functional Analysis Day '99, The Queen's University, Belfast (Northern Ireland)
June 1999 AMS-IMS-SIAM Joint Summer Research Conference ''Structured Matrices in
Operator Theory, Numerical Analysis, Control, Signal and Image Processing'',
University of Colorado, Boulder, Colorado (USA)
June 1999 Workshop ''Large-Scale Scientific Computations'', Sozopol (Bulgaria)
March 1999 11th International Conference ''Probleme und Methoden der Mathematischen Physik'', Chemnitz
Nov. 1998 Universität Paderborn
Sept. 1998 The College of William and Mary, Williamsburg, Virginia (USA)
Sept. 1998 Stieltjes Analysis Colloquium, Vrije Universiteit, Amsterdam (The Netherlands)
June 1998 Instituto Superior Técnico, Lisbon (Portugal)
May 1998 International Conference ''Fourier Analysis and Applications'', Kuwait University (Kuwait)
Nov. 1997 The College of William and Mary, Williamsburg, Virginia (USA)
Oct. 1997 Conference ''Computational Methods and Function Theory '97'', University of Cyprus, Nicosia (Cyprus)
Sept. 1997 14. Österreichischer Mathematikerkongress, Salzburg (Austria)
April 1997 Barcelona Analysis Seminar, CRM Barcelona (Spain)
April 1997 Conference ''Analysis and Applications '97'', University of Queensland, Brisbane (Australia)
Jan. 1997 Universität Bremen
Oct. 1996 Universität Greifswald
Aug. 1996 ''Aegean Conference on Operator Algebras and Applications'', University of the Aegean, Samos (Greece)
Aug. 1996 6th Conference of the International Linear Algebra Society, TU Chemnitz
June 1996 University of Montana, Missoula (USA)
June 1996 16th Annual Conference of the Canadian Applied Mathematics Society, Winnipeg, Manitoba (Canada)
May 1996 Great Plains Operator Theory Symposium, Arizona State University, Tempe (USA)
April 1996 Universität Rostock
Nov. 1995 Scientific Colloquium ''Zum Nutzen von Grundlagenforschung'', Krupp-Stiftung, Essen
Nov. 1995 International Seminar ''Schur Analysis in Honor of the 100th Anniversary of Rolf Nevanlinna'', Leipzig
Nov. 1995 Conference ''Deuxièmes Journées de Théorie des Opérateurs'',
CIRM Marseille-Luminy (France)
Oct. 1995 Universität des Saarlandes, Saarbrücken
With Yuri Karlovich in Williamsburg (Virginia)
Oct. 1995 ''Old Dominion Operator Theory and Analysis Conference'', Williamsburg, Virginia (USA)
July 1995 TU Berlin
June 1995 Conference ''C*-algebras and Their Invariants'', Cork (Ireland)
May 1995 Conference ''Linear Operators and Applications'', Oberwolfach
April 1995 47th British Mathematical Colloquium, Edinburgh (Scotland)
March 1995 Organization (together with Israel Gohberg) of the German-Israeli Workshop
''One-Dimensional Linear Singular Integral Operators'', Tel Aviv and Jerusalem (Israel)
Bernd Fritzsche, Bernd Kirstein, Viktor E. Katsnelson, I, and Israel Gohberg
in Tel Aviv, 1995
Dec. 1994 Conference ''Operator Theory for Complex and Hypercomplex Analysis'', Mexico City (Mexico)
Oct. 1994 Research Conference ''Applications of Operator Theory'', University of Manitoba, Winnipeg (Canada)
Sept. 1994 Jahrestagung der Deutschen Mathematiker-Vereinigung, Duisburg
Sept. 1994 Instructional Workshop ''Applications of Operator Theory'',
The Fields Institute, Waterloo, Ontario (Canada)
July 1994 AMS-IMS-SIAM Joint Summer Research Conference ''Bergman spaces
and the operators that act on them'', Mount Holyoke College, South Hadley, Massachusetts (USA)
March 1994 Banach Semester ''Linear Operators'', Warsaw (Poland)
Feb. 1994 Conference ''Differential Geometry, Hamiltonian Systems, and Operator Theory'',
University of the West Indies, Kingston (Jamaica)
Jan. 1994 Conference ''Singuläre Integral- und Pseudodifferential-Operatoren'', Oberwolfach
June 1993 ''Lars Onsager Symposium'', Trondheim (Norway)
May 1993 Tel Aviv University (Israel)
May 1993 Workshop ''Operator Algebras'', Haifa (Israel)
April 1993 Conference ''Journées de Théorie des Opérateurs'', CIRM Marseille-Luminy (France)
Dec. 1992 Universität Karlsruhe
Nov. 1992 Instituto Superior Técnico, Lisbon (Portugal)
Sept. 1992 California Polytechnic State University, San Luis Obispo (USA)
Sept. 1992 Conference ''Toeplitz and Wiener-Hopf operators in Honor of Harold Widom'',
University of California, Santa Cruz (USA)
Picnic with Harold Widom at Point Lobos, 1992
June 1992 Universität Konstanz
May 1992 Banach Semester in Honor of Stefan Banach's 100th Anniversary, Warsaw (Poland)
March 1992 Workshop ''Analyse mathematischer Modelle mit Singularitäten und
deren Anwendungen in den Technikwissenschaften'', Bad Kösen
Feb. 1992 International Workshop ''Second Days of Schur Analysis'', Leipzig
Jan. 1992 TU Cottbus
Nov. 1991 TU Berlin
July 1991 Universität Leipzig
June 1991 International Workshop ''Elementary Operators and Applications'', Blaubeuren
May 1991 DFG-Seminar ''Pseudodifferentialoperatoren'', Stollberg/Erzgebirge
March 1991 Internationales Seminar ''Schur Analysis'', Leipzig
Oct. 1990 Workshop ''Ingenieurwissenschaftliche und mathematische Analyse
bruchmechanischer und elastischer Probleme'', Darmstadt
Oct. 1990 TH Darmstadt
June 1990 C.I.M.E. Session ''Recent Developments in H^\infty Control Theory'', Como (Italy)
June 1990 Universität Stuttgart
Dec. 1989 Conference ''Toeplitzoperatoren, Wiener-Hopf-Probleme und deren Anwendungen'',
Oberwolfach
With Georg Heinig in Kishinev, 1983
Before 1989, I gave talks in Rostov-on-Don (seminar of I. B. Simonenko),
Kishinev (seminar of A. S. Markus), Tbilisi (seminar of B. V. Khvedelidze),
in St. Petersburg (seminar of V. P. Havin and N. K. Nikolski), in Berlin
(seminar of S. Prössdorf), in Leipzig (seminar of B. Fritzsche and B. Kirstein),
and at two conferences organized by V. Ptak in the Czech and Slovak Republics.