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[Settimanale] CAMBIO AULA Colloquio De Giorgi, prof. Simon Gindikin (11.07.06)
by Giulia Curciarello 06 Jul '06

06 Jul '06

AVVISO IMPORTANTE Si segnala che, per motivi organizzativi non previsti, il COLLOQUIO DE GIORGI annunciato per martedi' 11 luglio (del quale si acclude l'avviso) SI TERRA' ECCEZIONALMENTE IN AULA BIANCHI. COLLOQUIO DE GIORGI Simon Gindikin Rutgers University "Harmonic analysis on complex semisimple groups and symmetric spaces from point of view of complex analysis" Abstract In the classical conception of harmonic analysis on semisimple groups of E. Cartan and H. Weyl there was very essential interaction between algebraic and transcendental (analytic) methods. It looks that one more possibility - to start from the complex analysis on groups - was never systematically considered. Since all complex semisimple groups are Stein manifolds and all spherical functions are holomorphic, this way deserves an attention. If to choose this way then we will start not from characters or irreducible representations but from Cauchy integral formula on these groups. It turns out that there is a beautiful explicit Cauchy formula on all semisimple Lie groups and, more general, on all symmetric Stein manifolds and this formula will be the basic subject of this talk. This formula, similarly to the situation in one-dimensional complex analysis, is a base of complex analysis on these symmetric spaces, which incorporates the classical harmonic analysis and adds some new facts. Martedì 11 luglio 2006 ore 17.00 Aula Bianchi Piazza dei Cavalieri, 7 PISA -------------------------------------------------------------------------------- _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale -------------------------------------------------------------------------------- _______________________________________________ Utenti mailing list Utenti(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/utenti _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] CAMBIO AULA Colloquio De Giorgi, prof. Simon Gindikin (11.07.06)
by Caterina D'elia 06 Jul '06

06 Jul '06

AVVISO IMPORTANTE Si segnala che, per motivi organizzativi non previsti, il COLLOQUIO DE GIORGI annunciato per martedi' 11 luglio (del quale si acclude l'avviso) SI TERRA' ECCEZIONALMENTE IN AULA BIANCHI. Cordialmente, Caterina D'Elia _____________________ Caterina D'Elia Scuola Normale Superiore Classe di Scienze Responsabile Segreteria scientifica e amministrativa Piazza dei Cavalieri 7 56100 PISA Tel. ++39--050.509203 Fax ++39-050-509045 _______________________________________________________________________________________________________________________________________ Le informazioni contenute nella presente e-mail e nei relativi allegati possono essere riservate e sono, comunque, destinate esclusivamente al destinatario in indirizzo. E' vietata, pertanto, la diffusione, distribuzione e/o copiatura di tali informazioni da parte di qualsiasi soggetto diverso dal destinatario. Chiunque abbia ricevuto o letto questa e-mail per errore o senza esserne legittimato è invitato a darne immediatamente notizia al mittente tramite fax o e-mail e a distruggerla. Grazie. ----- Original Message ----- From: Michele Verde To: Centro De Giorgi Sent: Friday, June 23, 2006 11:49 AM Subject: Avviso Colloquio De Giorgi, prof. Simon Gindikin (11.07.06) COLLOQUIO DE GIORGI Simon Gindikin Rutgers University "Harmonic analysis on complex semisimple groups and symmetric spaces from point of view of complex analysis" Abstract In the classical conception of harmonic analysis on semisimple groups of E. Cartan and H. Weyl there was very essential interaction between algebraic and transcendental (analytic) methods. It looks that one more possibility - to start from the complex analysis on groups - was never systematically considered. Since all complex semisimple groups are Stein manifolds and all spherical functions are holomorphic, this way deserves an attention. If to choose this way then we will start not from characters or irreducible representations but from Cauchy integral formula on these groups. It turns out that there is a beautiful explicit Cauchy formula on all semisimple Lie groups and, more general, on all symmetric Stein manifolds and this formula will be the basic subject of this talk. This formula, similarly to the situation in one-dimensional complex analysis, is a base of complex analysis on these symmetric spaces, which incorporates the classical harmonic analysis and adds some new facts. Martedì 11 luglio 2006 ore 17.00 Aula Bianchi Piazza dei Cavalieri, 7 PISA _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] "if only I had a degree..."
by Kendra Bolden 03 Jul '06

03 Jul '06

Obtain a prosperous future, money-earning power and the prestige that comes with having the career position you've always dreamed of. Diplomas from prestigious non-accredited universities based on your present knowledge and life experience. No required tests, classes, books or examinations. Bachelors', Masters', MBA's, Doctorate & Ph.D. degrees available in your field. Confidentiality Assured.. Call Now To Receive Your Diploma Within 2 Weeks 1-650-456-2500 _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] Want the degree but can't find the time?
by Allan Johnson 01 Jul '06

01 Jul '06

Obtain your diploma, bachelors' or Masters' in 2 weeks time from prestigious non-accredited universities based on your present knowledge and life experience. No tests, exams or classes require. Call us now to receive yours today! 1-650-456-2500 Confidentiality Assured _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] Passed up for the promotion..again?
by Lonnie Askew 27 Jun '06

27 Jun '06

Obtain your diploma, bachelors' or Masters' in 2 weeks time from prestigious non-accredited universities based on your present knowledge and life experience. No tests, exams or classes require. Call us now to receive yours today! 1-509-355-1567 Confidentiality Assured _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] avvisi di seminari
by Giulia Curciarello 27 Jun '06

27 Jun '06

27/06 Aula seminari ore 15 J.M. Schlenker (Universite' Paul Sabatier, Toulouse) Titolo: "3-dimensional manifolds with particles". Abstract: A "particle" in a 3-dimensional hyperbolic 3-manifold is a cone singularity along an infinite line, with an angle which is less than $\pi$. There is a natural notion of quasi-Fuchsian manifold with particles, and those appear to share many of the striking geometric properties of (non-singular) quasi-Fuchsian 3-manifolds. We will describe some examples of properties which can be extended to this context. Quasi-Fuchsian 3-manifolds with particles also have a Lorentzian counterpart, GHMC AdS manifolds with particles, to which some properties of Mess' GHMC AdS manifolds can be extended. 29/06 Aula riunioni ore 15 G. Mondello (MIT) Titolo: Cicli di Witten sullo spazio dei moduli delle superfici di Riemann Abstract: Ogni presentation dello spazio dei moduli delle superfici di Riemann da` origini a classi caratteristiche "naturali". Dal punto di vista algebro-geometrico, esse sono le cosiddette classi tautologiche. D'altra parte, la decomposizione cellulare dello spazio dei moduli per mezzo di grafi a nastro consente di definire cicli combinatorici interessanti, che sono anche chiamati cicli di Witten. Lo scopo del seminario e` di illustrare alcune idee della dimostrazione della congettura di Witten-Kontsevich (i cicli combinatorici sono tautologici) e, se il tempo lo consente, accennare a possibili applicazioni e generalizzazioni. ************************* Segreteria Didattica Giulia Curciarello tel- 050 2213219 ************************* _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] Rose
by Broglia 24 Jun '06

24 Jun '06

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[Settimanale] Fw: Avviso Seminario di Matematica, prof. David W. MASSER (06.07.06)
by Giulia Curciarello 22 Jun '06

22 Jun '06

SEMINARIO DI MATEMATICA Giovedì 6 luglio 2006 ore 16.00 Scuola Normale Superiore Pisa (Aula Tonelli) David W. MASSER Università di Basilea Terrà un seminario dal titolo: "Linear equations in multiplicative groups over positive characteristic" Abstract The equation $a_1x_1+...+a_nx_n=1$, to be solved in unknowns $x_1,...,x_n$ lying in a fixed multiplicative group, has been much studied in the case of zero characteristic. However there are not many results over positive characteristic. This case is generally easier to handle, but it presents interesting new features. For example, although the equation can have infinite $(n-2)$-parameter families of solutions, these can be classified and estimated in a completely effective way. This has applications to multiple mixing problems for algebraic actions on disconnected compact abelian groups. Tutti gli interessati sono invitati a partecipare. La Segreteria della Classe di Scienze - - - - - Michele Verde Scuola Normale Superiore Segreteria Classe di Scienze Tel. 050-509048 Fax. 050-509045 Piazza Dei Cavalieri, 7 56126 Pisa E-Mail: m.verde(a)sns.it E-Mail: segreteria.scienze(a)sns.it - - - - - Le informazioni contenute nella presente e-mail e nei relativi allegati possono essere riservate e sono, comunque, destinate esclusivamente al destinatario in indirizzo. E' vietata, pertanto, la diffusione, distribuzione e/o copiatura di tali informazioni da parte di qualsiasi soggetto diverso dal destinatario. Chiunque abbia ricevuto o letto questa e-mail per errore o senza esserne legittimato è invitato a darne immediatamente notizia al mittente tramite fax o e-mail e a distruggerla. Grazie. _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Utenti] [Settimanale] Seminario prof. Ruiz (fwd)
by Francesca Acquistapace 16 Jun '06

16 Jun '06

Prego notare l'ora Grazie Francesca Acquistapace mercoledi' 21-06-2006 Ore 15:00 PRECISE - Sala dei Seminari Jesus Ruiz (Universitad Complutense Madrid) : "Open questions concernings Hilbert's 17th Problem for analytic curves" Abstract The Hilbert 17th Problem asks when a psd function is a sum of squares, and of how many. For real analytic curves this reduces to the local problem for germs at singular points. For those germs, the problem splits into the consideration of their irreducible branches. Now, irreducible curve germs are classically discussed using the semigroup of values: all irreducible curves with fixed semigroup form a "moduli" algebraic set in some finite dimensional affine space. There, Pythagoras numbers, positive semidefinite germs, sum of squares provide semialgebraic mappings on and stratifications of the "moduli" set. The understanding od these semialgebraic data is a difficult matter that has surprising connections with classical concepts (for instance, Arf curves and Pythagorean curves are one and the same thing). ************************* Segreteria Didattica Giulia Curciarello tel- 050 2213219 ************************* _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale _______________________________________________ Utenti mailing list Utenti(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/utenti _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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[Settimanale] SEMINARIO DI SISTEMI DINAMICI OLOMORFI (e dintorni)
by Giulia Curciarello 15 Jun '06

15 Jun '06

SEMINARIO DI SISTEMI DINAMICI OLOMORFI (e dintorni) Martedi' 20 giugno 2006 0re 14.30 Sala Conferenze Collegio Puteano Corinna ULCIGRAI (Princeton) "Mixing for flows over interval exchange transformations" Abstract: We consider suspension flows over interval exchange transformations, under a roof function with logarithmic singularities. Such flows arise as minimal components of flows on surfaces given by multi-valued Hamiltonians. We prove that if the roof function has an asymmetric logarithmic singularity, the suspension flow is strongly mixing for a full measure set of interval exchanges. This generalizes a result by Khanin and Sinai for flows over rotations of the circle. In the proof we use a recent result by Avila-Gouzel-Yoccoz. ************************* Segreteria Didattica Giulia Curciarello tel- 050 2213219 ************************* _______________________________________________ Settimanale mailing list Settimanale(a)mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale

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