Carola Bibiane Schoenlieb, DAMTP University of Cambridge
Learning variational regularization models for image denoising by PDE constrained optimization
http://www.damtp.cam.ac.uk/user/cbs31/Home.html
Wednesday, June 17 2015, at 11:00 precise
Dipartimento di Matematica del Politecnico - Aula Consiglio 7° piano | |
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Giovanni Gallavotti, Universita' di Roma
Gruppo di rinormalizzaione, effetto Kondo e modelli gerarchici
Monday, June 15 2015, at 17:00 precise
Sala di Rappresentanza, Dipartimento di Matematica, Via Saldini | |
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Andrei OKOUNKOV, Columbia University
T.B.A.
Monday, June 08 2015, at 16:30 precise
Dipartimento di Matematica, Via Saldini, Aula Chisini | |
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Rita PARDINI, Università di Pisa
Superfici di Godeaux stabili e curve bi-triellittiche di genere 2
Friday, May 22 2015, at 15:00
Sala Rappresentanza Dipartimento di Matematica Via Saldini 50 | |
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Alexandru ALEMAN, University of Lund
Fock-space models for evolution equations coming from quadratic differential operators
Monday, May 18 2015, at 17:00 precise
Sala Rappresentanza, Dipartimento di Matematica, Universita' di Milano, Via Saldini, 50 |
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Abstract
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We consider evolution equations induced by an important class of quadratic differential operators which arise from the Weyl quantization of quadratic forms. This class of operators has a number of special features which makes their study quite involved. In general:
1) They are far from being selfadjoint,
2) Their eigenvectors form a minimal set with dense span, but not a Riesz basis,
3) The norm of their resolvent grows exponentially towards infinity within certain regions in the complex plane.
The aim of the talk is to present a model for such operators on Fock spaces in several complex variables, which offers a complex analysis perspective and can be used to address a number of questions about the solutions of these evolution equations.
The material is based on joint work with J. Viola. |
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Vieri Benci, Università di Pisa
A new notion of generalized solution in PDE's
Wednesday, May 13 2015, at 17:00 precise
Dipartimento di Matematica del Politecnico - Aula Consiglio 7° piano | |
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