Professur Stochastik

Talks by Ivan Veselić

2012

Title: Unique continuation and equidistribution properties for eigenfunctions
Institution: Universitä Götttingen, Fakultät für Mathematik und Informatik
Occasion: Mathematische Gesellschaft
Date: 25. October 2012, 16:45
Abstract: Eigenfunctions of second order elliptic differential operators -- or more generaly solutions of elliptic equations -- exhibit a rigitity property controlling the oscillatory behaviour of the functions. An example would be the Harnack inequality, valid for the ground state. This is a pointwise estimate. We discuss related inequalities formulated in terms of local L2 norms, which are valid for excited states as well. This is related to unique continuation properties and uncertainty relations.

Title: Equidistribution properties of PDE-eigenfunctions
Institution: Institute of Mathematics of Bordeaux, University Bordeaux 1
Occasion: Conference Spectral Theory and Its Applications
Date: 4. October 2012, 09:00
Abstract: In a joint paper with C. Rojas-Molina we have proven that eigenfunctions of the time-independent Schrödinger-equation on large cubes (with Dirichlet or periodic b.c.) exhibit a type of quantitative equidistribution property, which is uniformly good over arbitrary lenght scales. We present this result and discuss applications, extensions and open problems.

Title: Diskussion über das Zusammenspiel von Bewegung und Zufall anhand von Beispielen
Institution: TU Chemnitz, Professur Stochastik
Occasion: Tag der offenen Tür, Studieninfos & Specials
Date: 9. June 2012, 14:00

Title: Gleichverteilungseigenschaften von Lösungen von PDEs
Institution: TU Bergakademie Freiberg, Institut für Numerische Mathematik und Optimierung
Occasion: Seminar
Date: 8. June 2012, 11:00

Title: Glivenko-Cantelli-Theorems, concentration inequalities, and the IDS
Institution: Institut de Mathématiques de Jussieu, Université Paris 13
Occasion: Conference: Mathématiques des systémes quantiques désordonnés
Date: 29. May 2012, 10:50
Abstract: The Glivenko-Cantelli Theorem states that the distribution functions of empirical measures generated by real-valued iid samples converge uniformly to the distribution function of the original measure. There exist various extensions of the Theorem to the mutivariate case and to Banach-space random variables, as well as criteria when the convergence holds in a stronger topology. We discuss the relation of the above results to concentration inequalities and applications in the spectral theory of random operators.

Title: Anwendungen des Satzes von Glivenko-Cantelli
Institution: Universität Jena, Lehrstuhl für Analysis
Occasion: Oberseminar Analysis, Geometrie und Stochastik
Date: 11. May 2012, 11:15

Title: Eigenschaften von Lösungen von partiellen Differentialgleichungen
Institution: Teschnische Universität Ilmenau, Institut für Mathematik
Occasion: Mathematisches Kolloquium
Date: 10. May 2012, 17:00

Title: Scale-uniform quantitative unique continuation principle
Institution: FAU Erlangen-Nürnberg, Department Mathematik
Occasion: Seminar Mathematische Physik
Date: 22. March 2012; 10:30

Title: Scale-uniform quantitative unique continuation principle
Institution: TU Graz, Institut für numerische Mathematik
Occasion: Seminar Angewandte Analysis und Numerische Mathematik
Date: 19. March 2012; 11:00

Title: Uncertainty relation: applications and methods
Institution: Universität Zagreb, Institut für Mathematik
Occasion: Seminar Numerische Mathematik und Wissenschaftliches Rechnen
Date: 15. March 2012

Title: Spectral averaging in the mathematical theory of Anderson localization
Institution: Universität Zagreb, Institut für Physik
Occasion: Seminar des Instituts für Physik
Date: 14. March 2012

Title: Scale-uniform quantitative unique continuation principle
Institution: Universität Zagreb, Institut für Mathematik
Occasion: Colloquium
Date: 13. March 2012

Title: Skaleninvariantes quantitatives Eindeutiges-Fortsetzungsprinzip und Anwendungen
Institution: Seminar Analysis, TU Dresden
Abstract: PDF-file
Occasion: Analysis Seminar
Date: 19. January 2012

2011

Title: Scale-free quantitative unique continuation principle
Institution: Max-Planck-Institut füur Mathematik in den Naturwissenschaften, Leipzig
Abstract: PDF-file
Occasion: Analysis Seminar
Date: 15. December 2011

Title: Low lying spectrum of randomly perturbed periodic waveguides
Institution: Doppler Institute in Department of Theoretical Physics of the Nuclear Physics Institute, Rez
Occasion: Seminar
Date: 18. November 2011

Title: Unique continuation principle and Wegner estimates
Institution: Mathematisches Forschungsinstitut Oberwolfach
Abstract: PDF-file
Occasion: Workshop "Correlations and Interactions for Random Quantum Systems"
Date: 24. October 2011

Title: Unique continuation properties of solutions of elliptic second order differential equations (1) and (2)
Institution: TU Chemnitz
Occasion: Seminar "Partielle Differentialgleichungen und Inverse Probleme"
Date: 21. October 2011 and 11.November 2011
Abstract: Bei vielen Typen von (partiellen) Differentialgleichungen ist bekannt, dass einen nichttriviale Lösung nicht auf einer offenen Menge verschwinden kann. Diese Eigenschaft wird im Englischen "unique continuation property" genannt. Oftmals wird sie aus einer Carleman-Ungleichung hergeleitet. Ein wichtiger Anwendungsberich ist die Eindeutigkeit der Lösung von nichtlinearen Differentialgleichungen. In manchen Situationen ist es von Interesse, eine quantitative Version der "unique continuation property" herzuleiten. Wir diskutieren dies.

Title: Dynamics and spectra of the Schrödinger equation
Institution: Mathematical Society in Split
Occasion: Colloquium
Date: 21. September 2011

Title: Eigenvalue flows for operator-pencils
Institution: Sveučilište u Splitu, Fakultet elektrotehnike, strojarstva i brodogradnje
Occasion: Mathematics seminar
Date: 20. September 2011

Title: Eigenvalue flows for linear pencils of operators
Institution: Hotel Colentum
Occasion: Workshop on quantitative spectral theory and mathematical physics
Date: 16. September 2011

Title: Localisation, Lifschitz tails and Wegner estimates for random Schrödinger operators
Institution: Institut de Mathématiques de Bordeaux
Occasion: Seminar Equipe Analyse
Date: 8. September 2011

Title: Zufällige Schrödingeroperatoren mit nicht-monotoner Parameter-Abhängigkeit
Institution: Johannes Gutenberg-Universität Mainz
Date: 28. Januar 2011

2010

Title: Geometrische und Spektrale Eigenschaften von Perkolationsclustern auf Cayleygraphen
Institution: Karlsruher Institut für Technologie
Date: 16. November 2010

Title: Spectral properties of random Schroedinger operators with general interactions
Institution: Pontificia Universidad Catolica de Chile
Occasion: Seminar on Partial Differential Equations and Spectral Theory
Date: 30. September 2010

Title: Spectral properties and averaging for discrete alloy type potentials
Institution: Pontificia Universidad Catolica de Chile
Occasion: Plenary talk at the International Conference "Spectral Days"
Date: 21. September 2010

Title: Fractional moment method for non-monotone models
Institution: University of Hradec Kralove
Occasion: QMath11 Mathematical Results in Quantum Physics, Hradec Kralove
Date: 6. September 2010

Title: Discrete alloy type models: averaging and spectral properties
Institution: Isaac Newton Institute for Mathematical Sciences, Cambridge, UK
Occasion: Invited talk at the workshop "Analysis on Graphs and its Applications Follow-up meeting"
Date: 29. July 2010

Title: Spectral distribution function of percolation operators
Venue: Department Mathematik, Universität Erlangen-Nürnberg
Occasion: AG Mathematische Physik
Date: 17. June 2010

2009

Title: Discrete alloy type models with single site potentials of changing sign
Venue: Clarion Congress Hotel Prague
Occasion: International Congress on Mathematical Physics
Invited talk in the section on Nonrelativistic Quantum Mechanics
Date: 4. August 2009

Title: Geometrische und Spektrale Eigenschaften von Perkolationsclustern auf Cayleygraphen
Institution: Universität Mainz
Occasion: job application talk
Date: 16. July 2009

Title: Exponentieller Abfall der Greenschen Funktion fü Legierungsmodelle auf Z
Institution: Universität Oldenburg
Date: 10. July 2009

Title: Percolation clusters on Calyey graphs and their spectra
Occasion: "Alp-Workshop", St.~Kathrein am Offenegg bei Graz
Date: 5. July 2009

Title: Spektrale Eigenschaften von diskreten Legierungsmodellen
Institution: Ruhr-Universität Bochum
Occasion: Oberseminar über Mathematische Physik
Date: 1. July 2009

Title: Exponential decay of Green's function for Anderson models on Z with single-site potentials of finite support
Institution: Universität Mainz
Occasion: Oberseminar Analysis
Date: 30. June 2009

Title: Geometric and spectral properties of percolation on Cayley graphs
Institution: Universität Paderborn
Occasion: job application talk
Date: 3. April 2009

Title: Bounds on the spectral shift function and applications
Institution: Durham University
Occasion: Pure Mathematics Colloquium
Date: 16. March 2009

Title: Percolation clusters on Calyey graphs and their spectra
Institution: Imperial College
Occasion: London Analysis and Probability Seminar
Date: 12. March 2009

Title: Bounds on the spectral shift function and applications
Institution: University College London
Occasion: Mathematics Seminar
Date: 11. March 2009

Title: Geometric and spectral properties of percolation on Cayley graphs
Institution: University of Bristol
Occasion: Analysis Seminar
Date: 9. March 2009

2008

Title: Geometrische und spektrale Eigenschaften von Perkolationgraphen
Institution: Institut für Mathematik, TU Berlin
Occasion: job application talk
Date: 17. December 2008

Title: Perkolationscluster auf Cayleygraphen und deren Spektren
Institution: Faculty of Mathematics, TU Cemnitz
Occasion: job application talk
Date: 12. December 2008

Title: Percolation and spectra on Cayley-graphs
Occasion: Oberwolfach-Workshop "Interplay of Analysis and Probability in Physics"
Date: 2. December 2008

Title: Geometrische und spektrale Eigenschaften von Perkolationgraphen
Institution: TU Chemnitz
Occasion: Forschungsseminar Alogrithmische und Diskrete Mathematik
Date: 26. November 2008

Title: Bounds on singular values of semigroup differences and the spectral shift function
Institution: TU Clausthal
Occasion: Mathematisches Kolloquium
Date: 19. November 2008

Title: Geometrische und spektrale Aspekte von Perkolation auf allgemeinen Graphen
Institution: Fakultät für Mathematik und Informatik, Universität Bremen
Occasion: job application talk
Date: 18. November 2008

Title: Perkolation auf homogenen Graphen
Institution: Fakultät für Mathematik und Informatik, Fern-Universität Hagen
Occasion: job application talk
Date: 24. October 2008

Title: Geometrische und spektrale Eigenschaften von Perkolationteilgraphen
Institution: TU Dortmund
Occasion: Oberseminar Geometrie
Date: 23. October 2008

Title: Perkolation auf homogenen Graphen
Institution: School of Mathematics and Computer Science, Friedrich-Schiller-Universität of Jena
Occasion: job application talk
Date: 7. October 2008

Title: Classical and Quantum percolation
Institution: Institut für Mathematik C, Technische Universität Graz
Date: 28. July 2008

Title: Singular values of semigroup differences and applications to the spectral shift function
Institution: TU Berlin
Date: 24. July 2008

Title: Geometrische und spektrale Eigenschaften von Perkolation auf Cayleygraphen
Institution: Universität Tübingen
Occasion: job application talk
Date: 15. July 2008

Title: Percolation on Cayley and quasi-transitive graphs
Institution: Universität Bielefeld
Occasion: Workshop des SFB 701 "Aspects of Aperiodic Order"
Date: 4. July 2008

Title: Geometrische und spektrale Eigenschaften von Perkolation auf Cayleygraphen
Institution: Ruhr-Universität Bochum
Occasion: job application talk
Date: 1. July 2008

Title: Estimates on singular values and the spectral shift function, with applications
Institution: Universität Bielefeld
Occasion: job application talk
Date: 26. June 2008

Title: Spectral and geometric properties of percolation on general graphs
Occasion: ESF-Conference "Operator Theory, Analysis and Mathematical Physics", Bedlewo, Polen
Date: 16. June 2008

Title: Spectral and geometric properties of percolation on general graphs
Institution: Institut für Mathematik, TU Clausthal
Occasion: Mathematisches Kolloquium
Date: 28. May 2008

Title: Spectral and geometric properties of percolation on general graphs
Institution: Institut for Theoretical Physics, Universität Hamburg
Occasion: Seminarreihe "Quantum Field Theory and Mathematical Physics"
Date: 27. May 2008

Title: Integrated density of states for Schr\"odinger operators on metric graphs
Institution: Humboldt-Universiy Berlin
Occasion: Workshop "Mathematical Physics and Spectral Theory"
Date: 25. April 2008

Title: Wegner estimates for non-monotoneously correlated alloy type models
Occasion: Oberwolfach-Workshop, Disordered Systems: Random Schrödinger Operators and Random Matrices
Date: 25. March 2008

Title: On spectral properties of correlated and non-monotone Anderson models
Occasion: German Open Conference on Probability and Statistics, Aachener Stochastiktage
Date: 6. March 2008

Title: Spectral and geometric properties of percolation on general graphs
Institution: Universität Bielefeld
Occasion: Seminar des SFB 701
Date: 23. January 2008

2007

Title: Low energy asymptotics of percolation Laplacians on Cayley graphs
Institution: Hausdorff-Institut, Bonn
Occasion: Workshop "Particle systems, nonlinear diffusions, and equilibration"
Date: 15. November 2007

Title: Perkolationsprozesse und Laplaceoperatoren auf Cayleygraphen
Institution: Philipps-Universität Marburg
Occasion: Kolloquium des Fachbereichs Mathematik und Informatik
Date: 15. August 2007

Title: Low energy asymptotics of percolation Hamiltonians on graphs
Institution: TU Wien
Occasion: Conference "Equadiff 07"
Date: 6. August 2007

Title: Spectral asymptotics of percolation Laplacians on amenable Cayley graphs
Institution: Isaac Newton Institute
Occasion: Workshop on "Quantum Graphs, Their Spectra and Applications"
Date: 3. April 2007

Title: Lifshitz tails for random Hamiltonians monotone in the randomness
Occasion: Oberwolfach Mini-Workshop "Multiscale and variational methods in materials science and the quantum theory of solids"
Date: 12. February 2007

2006

Title: Untere Schranken an Eigenwertabstände
Occasion: Chemnitzer Mathematisches Colloquium
Date: 7. December 2006

Title: Lifshitz tails for the IDS of Schrödinger operators with random breather-type potential
Occasion: International Conference "Operator Theory in Quantum Physics", Prag
Date: 28. September 2006

Title: Lifshitz tails for Schrödinger operators with random breather-type potential
Occasion: Conference "Operator Theory, Analysis and Mathematical Physics", Lund
Date: 16. June 2006

Title: Existenz- und Stetigkeitseigenschaften der Integrierten Zustandsdichte
Occasion: Chemnitzer Mathematisches Colloquium
Date: 18. May 2006

Title: Anderson-percolation Hamiltonians and compactly supported eigenstates
Occasion: Interdisciplinary Workshop "Evolution on Networks", Blaubeuren
Date: 1. May 2006

Title: Untere Schranken an die unterste spektrale L¨cke von Hamiltonoperatoren mit singulärem Potential
Institution: RWTH Aachen
Occasion: Seminar des Graduiertenkollegs "Hierarchie und Symmetrie in mathematischen Modellen"
Date: 24. April 2006

Title: Anderson-percolation Hamiltonians and compactly supported eigenstates
Institution: TU Graz
Occasion: Strukturtheorie-Seminar
Date: 20. April 2006

Title: Spectral analysis of percolation Hamiltonians
Occasion: Oberwolfach Mini-Workshop "L2-Spectral Invariants and the Integrated Density of States"
Date: 24. February 2006

Title: Tiefliegendes Spektrum von zufälligen Schrödingeroperatoren
Institution: TU Chemnitz
Occasion: Forschungsseminar Algorithmische und Diskrete Mathematik
Date: 25. January 2006

Title: Spectral properties of Anderson-percolation Hamiltonians on graphs
Institution: Erwin Schrödinger Institut, Wien
Occasion: Workshop "Aspects of Spectral Theory"
Date: 19. January 2006

Title: Compactly supported eigenfunctions of Hamiltonians on infinite graphs and jumps of the IDS
Institution: Universität Bielefeld
Occasion: Seminar des SFB 701
Date: 4. January 2006

2005

Title: Untere Schranken an die unterste spektrale Lücke von Hamiltonoperatoren mit singulärem Potential
Institution: University Osijek, Croatia
Date: 19. December 2005

Title: Lower bounds on the lowest spectral gap of singular potential Hamiltonians
Institution: Universität Bonn
Occasion: Symposium "Dirichlet Forms, Stochastic Analysis and Interacting Systems"
Date: 24. November 2005

Title: Lower bounds on the lowest spectral gap of singular potential Hamiltonians
Institution: Université de Cergy-Pontoise, France
Date: 28. September 2005

Title: Spectral Analysis of Percolation Hamiltonians
Occasion: Workshop "Computation and Analytic Problems in Spectral Theory", Gregynog, Wales
Date: 28. July 2005

Title: Bounds on the spectral shift function and the density of states
Institution: Max-Plank-Institut, Leipzig, Germany
Date: 24. May 2005

Title: Localization for alloy-type models: rigorosus results and methods
Institution: Department of Physics, Chemnitz
Date: 13. April 2005

Title: Spectral analysis of percolation Hamiltonians
Institution: Université Paris, France
Date: 8. March 2005

Title: Quantenmechanik ungeordneter Festkörper: das Phänomen der Lokalisierung
Occasion: Kolloquium der Kroatischen Mathematischen Gesellschaft, Zagreb
Date: 23. February 2005

Title: Spectral properties of periodic and random Schrödinger operators
Institution: University of Bath, UK
Date: 14. February 2005

Title: Spectral properties of the quantum percolation model on graphs
Institution: University of Durham, UK
Date: 9. February 2005

2004

Title: Bounds on the spectral shift function and the density of states
Istitution: TU Dresden
Date: November 2004

Title: Spektren von Quantenperkolationsmodellen
Istitution: Universität Augsburg
Date: 22. November 2004

Title: Spectral averaging induced by random, geometric perturbations
Institution: Doppler Institute, Prag
Date: November 2004

Title: Spectral Analysis of Percolation Hamiltonians
Occasion: QMath-9: Mathematical Results in Quantum Mechanics, Giens
Date: September 2004

Title: Bounds on the spectral shift function and the density of states
Occasion: Mathematics and Physics of Disordered Systems, Oberwolfach
Date: May 2004

Title: Spektrale Verschiebung induziert durch ein kompakt getragenes Potential
Institution: Symposium über Analysis, Universitäat Basel
Date: April 2004

Title: Integrated density of states for random metrics on manifolds
Institution: City University of New York
Date: February 2004

2003

Title: Spectral properties of the quantum percolation model on graphs
Institution: Ruhr-Universität Bochum
Date: December 2003

Title: Spectral shift induced by a compactly supported potential
Institution: Universität Mainz
Date: December 2003

Title: Spectral shift induced by a compactly supported potential
Institution: Universität Stuttgart
Date: November 2003

Title: Spectral shift induced by a compactly supported potential
Institution: Universität Konstanz
Date: November 2003

Title: Spectral shift induced by a compactly supported potential
Institution: University of Alabama at Birmingham
Date: October 2003

Title: Spectral shift induced by a compactly supported potential
Occasion: CalTech
Date: October 2003

Title: Spectral shift induced by a compactly supported potential
Institution: TU Chemnitz
Date: July 2003

Title: Spectral shift induced by a compactly supported potential
Institution: Ruhr-Universität Bochum
Date: July 2003

Title: Spectral shift induced by a compactly supported potential
Institution: University Zagreb
Date: July 2003

Title: Spectral properties of quantum percolation models
Occasion: Conference Applied Mathematics and Scientific Computing, Brijuni, Kroatien
Date: 25. June 2003

Title: Spectral properties of the quantum percolation model on graphs
Occasion: CalTech
Date: March 2003

Title: Wegner estimates for indefinite potentials and inverses of Toeplitz matrices
Occasion: Western States Mathematical Physics Meeting, CalTech
Date: February 2003

2002

Title: On Wegner estimates with singular and indefinite randomness
Institution: UC Irvine
Date: 12. December 2002

Title: Integrated density of states for random metrics on manifolds
Occasion: CalTech
Date: November 2002

Title: Integrated density of states for random metrics on manifolds
Institution: Ruhr-Universität Bochum
Date: October 2002

Title: Existence of the density of states for single site potentials with samll support in one dimension
Occasion: Workshop Between Order and Disorder, Greifswald
Date: September 2002

Title: Wegner estimate with local continuity requirements on the coupling constants
Occasion: Conference on Differential Equations and Mathematical Physics, Birmingham, USA
Date: 26. March 2002

Title: Lokalisierung an Floquet-regulären Bandkanten
Institution: Institut für Theoretische Physik I, Universität Erlangen-Nürnberg
Date: January 2002

Title: Gruppoide von Neumann Algebren und die Integrierte Zustandsdichte
Institution: Institut für Theoretische Physik I, Universität Erlangen-Nürnberg
Date: January 2002

Title: Existenz der Zustandsdichte für indefinite Legierungspotentiale
Institution: Fakultät für Mathematik, TU Chemnitz
Date: January 2002

2001

Title: Lipschitz continuity of integrated density of states for single site potentials with small support
Occasion: Mathematical results in Quantum Mechanics, Taxco, Mexico
Date: December 2001

Title: Integrated density of states for random operators on manifolds
Occasion: Workshop Schrödinger Operators, IIMAS, UNA Mexico
Date: 7. December 2001

Title: Wegner estimate for sparse and other generalized alloy type potentials
Occasion: Workshop Schrödinger Operators, IIMAS, UNA Mexico
Date: 5. December 2001

Title: The integrated Density of states and Wegner estimates
Occasion: Workshop Schrödinger Operators, IIMAS, UNA Mexico
Date: 3. December 2001

Title: Existence of the density of states for Anderson models with indefinite single site potentials
Occasion: Workshop SFB 237, Tutzing
Date: October 2001

Title: Integrated Density of states for random Schrödinger Operators on manifolds
Occasion: Mini-Conference Random Schrödinger Operators, Tsukuba, Japan
Date: August 2001

Title: Wegner Estimate for Indefinite Anderson Potentials
Institution: Research Institute for Mathematical Sciences, Kyoto
Occasion: Workshop Applications of Renormalization Group Methods in Mathematical Sciences
Date: July 2001

Title: Wegner estimates for alloy type potentials with changing sign
Institution: University of Osaka
Date: July 2001

Title: Localization by disorder at Floquet-regular spectral boundaries
Institution: University of Osaka
Date: July 2001

Title: Regularity porperties of the integrated density of states of random Schrödinger operators
Occasion: Conference Applied Mathematics and Scientific Computing, Dubrovnik, Croatia
Date: June 2001

Title: Die Wegner-Abschätzung und die gemeinsame Dichte der Anderson-Kopplungskonstanten
Occasion: Conference Schrödinger Operators, Oberwolfach
Date: June 2001

Title: Spektrale Eigenschaften von periodischen un zufälligen Schrödingeroperatoren
Institution: University Zagreb, Croatia
Date: May 2001

Title: Wegner estimates for alloy type potentials with changing sign
Occasion: Schrödinger operators, Oberwolfach
Date: May 2001

Title: Spektrale Eigenschaften von zufälligen Schrödingeroperatoren
Institution: Fern-Universität Hagen
Date: March 2001

2000

Title: Wegner Abschätzung für indefinite, überlappende Anderson Potentiale mit glatter Dichte
Occasion: AG Mathematische Physik, Bochum
Date: 5. October 2000
Abstract: PDF

Title: Wegner Abschätzung für indefinite, überlappende Einzelpotentiale mit glatter Dichte
Occasion: Workshop "Ungeordnete Systeme", Bochum
Date: May 2000

Title: Integrated density of states for Schrödinger operators on manifolds
Occasion: Conference on Differential Geometry and Quantum Physics, Berlin
Date: May 2000

Title: Integrated density of states for Schrödinger operators on manifolds
Occasion: Institut für Angewandte Mathematik, Universität Bonn
Date: January 2000

1999

Title: Wegner Abschätzung für indefinite Anderson-Potentiale
Occasion: Workshop SFB 237, Bad Honnef
Date: September 1999

Title: Wegner estimates for alloy type potentials with changing sign
Institution: University of Lulea, Sweden
Date: September 1999

Title: Wegner estimate for the Anderson model with indefinite potential
Institution: NTNU Trondheim, Norway
Date: August 1999

Title: Wegner estimate for the Anderson model with indefinite potential
Occasion: Conference on Differential Equations and Mathematical Physics, Birmingham, USA
Date: May 1999

1998

Title: Random potentials causing localisation
Occasion: Workshop SFB 237, Bad Honnef
Date: September 1998