[CvGmt News] [Notiziario] [Settimanale] avviso di seminario di Matematica prof. Jean-Michel Bony (12.11.2018)
Valeria Giuliani
valeria.giuliani at sns.it
Tue Nov 6 09:42:29 CET 2018
SEMINARIO DI MATEMATICA
Lunedì 12 novembre 2018
ore 16:00
*Scuola Normale Superiore*
Pisa
Aula Bianchi Scienze
* Jean-Michel Bony*
*(CNRS)*
terrà un seminario dal titolo:
*“**How to define the symbol of a Fourier Integral Operator?**”*
*Abstract:*
In 1971, Hörmander introduced the Fourier Integral Operators associated to
homogeneous phase functions, and defined their principal symbol as a
section of a line bundle (the Maslov bundle). However, this bundle,
abstractly defined via its transition functions, has no concrete meaning
and the definition is strictly linked to the homogeneity of the phases. I
developed more recently an extended theory of Fourier Integral Operator
associated to non necessarily homogeneous canonical transformations. In
that context, their symbol appears naturally as sections of a more
concrete bundle, made of metaplectic operators. The comparison between the
two points of view, in the case of (almost)
homogeneous phase functions leads to a new construction of the Maslov bundle
and of the symbols of FIO.
Tutti gli interessati sono invitati a partecipare.
Classe di Scienze
Valeria Giuliani
Scuola Normale Superiore
Servizio alla Didattica e Allievi
tel. 050 509260
Piazza dei Cavalieri, 7
56126 Pisa
E-mail: valeria.giuliani at sns.it
E-mail: classi at sns.it
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