Si informa che la lezione del Prof. C. Bardos del 20/10/2004 non si terrà più in Aula Fermi ma nell'Aula Dini Palazzo del Castelletto, via del Castelletto 11 Pisa. Centro di Ricerca Matematica Ennio De Giorgi Avviso di ciclo di lezioni del Prof. C. Bardos

TITOLO: "Beliefs and Theorems for Fluid Mechanics"

PROGRAMMA: To try to reach a convenient overview of the state of the art I intend in these three lectures to produce a mixture of both very formal constructions and rigourous theorems. Therefore I will follow the following schedule.

Tuesday, October 19, 16h30-18h30: Aula Bianchi This lecture is devoted to the theorems concerning the incompressible Euler Equation. Local existence with smooth initial data in 3d, Global existence and uniqueness in 2d with initial bounded vorticity, Propagation of regularity in 2d with the pair dispersion formula and in 3d with the Beale Kato Majda Kozono criteria and the Constantin Fefferman criteria. Arnold stability criteria for stationary solutions. Open problems in particular weak limit of 2d solutions either with oscillating initial data or with vanishing viscosity and no slip boundary condition ( Kato criteria and Grenier instability.)

Wednesday October 20, 18h30-19h30: Aula Dini Palazzo del Castelletto, via del Castelletto 11 Pisa I describe tools used for the macroscopic limit of the Kinetic equations with the hope that they may be used also for other purpose. The averaging lemma of Golse Lions Perthame and Sentis and its L1 extension. The notion of dissipative solution for the incompressible Euler equation application to the incompressible limit of the Boltzmann equation. Giulia Curciarello Segreteria Didattica tel: 050-2213219 e-mail curciare@dm.unipi.it

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