| 1993 | January | Contractive zero divisors, Colloquium, Brown University, Providence, RI. |
| February | Contractive zero divisors, Colloquium, Uppsala University, Uppsala, Sweden. |
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| March | Contractive zero divisors, Colloquium, University of Linköpping, Sweden. | |
| April | Invariant subspaces in Bergman spaces, Stockholm Analysis Seminar, Stockholm University. | |
| May | The Riemann function and its applications, Analysis Seminar, Royal Institute of Technology, Stockholm Work of H.S. Shapiro, Conference in honor of the retirement of H.S. Shapiro, Royal Institute of Technology, Stockholm. First paper of I. Fredholm, Colloquium, University of Jyvaskyla, Finland. | |
| 1994 | January | The Reflection principle revisited, AMS winter meeting, Cincinnati, Special session on holomorphic differential equations. |
| July | Extremal problems in Bergman spaces, one hour invited lecture at the AMS Summer Conference on Bergman Spaces, Mount Holyoke, MA. | |
| 1995 | January | The Reflection principle revisited, Colloquium, University of Maryland, College Park, MD. |
| February | The Reflection principle revisited, Colloquium, University of Kentucky, Lexington, KY. | |
| March-May | A short course on “Holomoprhic PDE and Potential Theory,” Universidad de La Laguna (Spain). | |
| June | The Reflection principle revisited, two one-hour lectures, Universidad de Autonoma Barcelona, Spain. | |
| 1996 | February-March | The reflection of harmonic functions across real-analytic hypersurfaces, Northwestern University, Evanston, IL. |
| September | The isoperimetric inequality revisited, September 20, Trondheim, Norway. | |
| Best approximation in the mean by analytic functions, Conference on Bergman Spaces, invited. | ||
| 1997 | February | The Schwarz reflection principle revisited. |
| Best approximation in the mean by analytic functions, Washington University, St. Louis. | ||
| 1998 | January | The reflection principle, Colloquium, University of Sydney, Australia, invited. |
| Szegö’s theorem on extension of expansions of spherical harmonics, Colloquium, University of New South Wales, Australia, invited. | ||
| March | Approximation of Continuous functions in L1-norm, AMS Meeting, Manhattan, Kansas. | |
| Analytic continuation of Dirichlet Series, AMS meeting, Louisville, Kentucky. | ||
| July | Approximation in the mean by harmonic functions, Analysis Seminar, University of Michigan, invited. | |
| October | The reflection principle, Analysis Seminar, University of Illinois, Chicago, invited. | |
| 1999 | January | Approximation in the mean, AMS winter meeting, San Antonio, TX. |
| May | Conference on PDE at Carmiel College, Israel. | |
| Participant in the Round Table on How to write mathematics, San Antonio, TX. | ||
| Bounded Approximation by Analytic and Harmonic Functions, Colloquium at Technion in Haifa, Israel. | ||
| Three lectures on Approximation in the mean by harmonic functions--Colloquiums at Technion and Bar Ilan, Israel University, and a one-hour invited talk at the Conference on PDE and Approximation Theory | ||
| December | Uniform approximation by harmonic functions, one-hour invited talk at Mittag-Leffler Institute, Sweden | |
| 2000 | June | Best approximation by harmonic and analytic functions, invited talk at the Joint AMS-Scandinavian Math Society meeting in Odense, Denmark. |
| 2001 | January | Approximation in the mean by harmonic functions, AMS winter meeting, New Orleans. |
| May | Szegö’s theorem and extensions of solutions of holomorphic PDEs, Colloquium, Brown University. | |
| October | An inverse problem for double layer potentials, Colloquium, Oklahoma State University, Washington University in St. Louis. | |
| 2002 | September | Three questions on harmonic functions, VOTCAM conference, University of Richmond, invited principal speaker, 2 lectures. |
| October | An inverse problem for double layer potentials, CIRM conference on spaces of analytic functions and operator theory, Marseilles, invited 1hour talk. | |
| December | The isoperimetric inequality revisited, SUNY at Albany, invited colloquium talk. | |
| 2003 | March | Weak compactness in star invariant subspaces, SEAM, Principal Speaker, 1 hour invited talk. |
| June | Weak compactness in star invariant subspaces, AMS-RMSE joint meeting, Seville, invited talk | |
| July | The isoperimetric inequality revisited, Function Theory Conference, Metz, France, invited talk. | |
| October | Remarks on the Bohr Phenomenon, AMS meeting in Chapel Hill, NC, special session, invited. | |
| Zeros of Harmonic Polynomials, Colloquium, Seton Hall University, invited. | ||
| 2004 | February | Zeros of rational harmonic functions with applications to gravitational microlensing, Functiontheorie meeting, Oberwolfach, 1 hr invited talk. |
| June | Extremal problems for analytic functions in Bergman spaces, two invited lectures at Bar Ilan University, Ramat Gan, Israel. | |
| September | Zeros of rational harmonic functions and gravitational microlensing, Distinguished Visitor Lectures, Bucknell University. | |
| October | Zeros of rational harmonic functions and gravitational microlensing, Colloquium, SUNY at Albany, invited. | |
| November | The isoperimetric inequality revisited, Colloquium, Bucknell University, invited. | |
| 2005 | January | On the maximal number of zeros of certain rational harmonic functions, Special Session at the AMS Winter meeting in Atlanta, invited. |
| April | On the maximal number of zeros of certain rational harmonic functions, SEAM, invited. | |
| May | Research in Pairs with Harold S. Shapiro and M. Putinar, Oberwolfach, invited. | |
| June | The isoperimetric inequality and some free boundary problems, one hour plenary lecture at the CMFT 2005 conference, Joensuu. | |
| July | Workshop on gravitational microlensing, AIM Palo Alto, invited. | |
| September | Valency of certain harmonic functions and gravitational microlensing, Texas Tech University, Colloquium talk, invited. | |
| October | Some algebraic aspects of the Dirichlet problem, Conference on recent advances in operator related function theory, a plenary talk, Madrid. | |
| Zeros of rational harmonic functions and microlensing, Colloquium talk, Virginia Tech. | ||
| 2006 | January | Lightning bolts and the Dirichlet problem, Conference on Complex Analysis and Dynamical Systems, Naharia, Israel, invited talk. |
| Algebraic aspects of the Dirichlet problem, Conference on Planar Harmonic mappings, Technion, Haifa, a plenary talk. | ||
| Algebraic aspects of the Dirichlet problem, Colloquium talk, Virginia Tech, invited. | ||
| From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, Mississippi State University, invited. | ||
| February | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, University of South Florida, invited. | |
| March | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, University of California at San Diego, invited. | |
| From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, George Washington University, invited. | ||
| From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, University of Tennessee, invited. | ||
| April | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, University of Delaware, invited. | |
| Dirichlet problem with the rational data, AMS Meeting in Durham, NH, Special Session on Complex Analysis, invited. | ||
| May | Algebraic aspects of the Dirichlet problem, Complex and Harmonic Analysis Conference, Thessaloniki, Greece, invited talk. | |
| September | Potential theory viewed from the complex space, Conference on Complex Analysis and Potential Theory, Istanbul, Turkey, a plenary talk. | |
| 2007 | January | Gravitational lensing by elliptical galaxies and the Schwarz function. Dangriga, Belize, invited talk. |
| Algebraic aspects of the Dirichlet problem, R. P Gilbert 75th birthday Conference, Orlando, Florida, invited talk. | ||
| May | Gravitational lensing by elliptical galaxies and the Schwarz function, Conference on new trends in complex and harmonic analysis, Bergen, Norway, a plenary talk. (PDF) | Nonlinear extremal problems for analytic functions, Conference on extremal problems in real and complex analysis, Moscow, Russia, invited talk. (PDF) |
| July | Gravitational lensing by elliptical galaxies and the Schwarz function, Quadrature domains and Laplacian growth in modern physics symposium, BIRS, Banff, invited 1 hr. talk. (PDF) | |
| October | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, University of Tampa, invited. | |
| From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, MASS Colloquium talk, Penn State, invited.(PDF) | ||
| 2008 | March | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, Colloquium talk, Los Alamos National Laboratory, invited. |
| May | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, 2 hour Colloquium talk for graduate students, University of Cyprus, invited. | |
| “Fingerprints” of two-dimensional shapes and lemniscates, Colloquium talk, University of Cyprus, invited. | ||
| June | Searching for singularities of solutions of the Dirichlet problem: recent developments, Workshop on Complex Analysis and Mathematical Physics, Nordfjordeid, Norway, a plenary talk. | |
| August | From the Fundamental Theorem of Algebra to astrophysics; a “harmonious” path, A Workshop on Laplacian growth and related topics, Centre de recherches mathematiques, Universite de Montreal, a plenary talk. |