Bruno Klingler, Humboldt Universitaet Berlino
Tame topology and algebraic geometry
Lunedì 11 Marzo 2019, ore 16:30 precise
Aula Seminari 6 piano, Ed. La Nave | |
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Anton Baranov, Saint Petersburg State University
Spectral synthesis for systems of exponentials and reproducing kernels
Giovedì 07 Febbraio 2019, ore 16:00
Sala di Rappresentanza, Dipartimento di Matematica, Via C. Saldini 50, Milano |
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Abstract
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Let $x_n$ be a complete and minimal system of vectors in a Hilbert space $H$. We say that this system is hereditarily complete or admits spectral synthesis if any vector in $H$ can be approximated by linear combinations of partial sums of the Fourier series with respect to $x_n$. It was a long-standing problem whether any complete and minimal system of exponentials in $L^2(-a,a)$ admits spectral synthesis. Several years ago we gave a negative answer to this question. At the same time we showed that any such system admits the synthesis up to a one- dimensional defect. In the talk we will also discuss related problems for systems of reproducing kernels in Hilbert spaces of entire functions (such as Paley-Wiener, de Branges, Fock). |
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Guido Kings, Università di Regensburg
The Birch-Swinnerton-Dyer conjecture, some recent progress
Lunedì 07 Gennaio 2019, ore 16:00
Aula C, Dipartimento di Matematica, Via C. Saldini 50, Milano | |
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Arkady Tsinober, Tel Aviv University
Turbulence versus Mathematics and vice versa
Martedì 04 Dicembre 2018, ore 16:00
Aula 3015 del Dipartimento di Matematica e Applicazioni dell'Università di Milano - Bicocca | |
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Shigefumi Mori, Kyoto University Institute of Advanced Study
BIRATIONAL EQUIVALENCE OF ALGEBRAIC VARIETIES
Lunedì 26 Novembre 2018, ore 16:30
Aula Chisini, Diparimento di Matematica, Via C. Saldini 50 | |
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Terence Tao, University of California, Los Angeles
VAPORIZING AND FREEZING THE RIEMANN ZETA FUNCTION
Venerdì 22 Giugno 2018, ore 14:30
Edificio U4, P.zza della Scienza, 4, Aula Luisella Sironi | |
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