*mercoledì 9 gennaio 2019* ore 11:00 *Scuola Normale Superiore* Pisa Aula Mancini *Eduard Feireisl* *(Institute of Mathematics of the Czech Academy of Sciences)* Terrà un seminario dal titolo: *“**Semiflow selection for the compressible Euler system**” * *Abstract:* *Using the methods of the theory of Markov semigroups, we show the existence of a Borel measurable solution semiflow for the isentropic Euler system in the multidimensional setting. Solutions are understood as time dependent trajectories of the basic state variables - the mass density, the linear momentum, and the energy - in a suitable phase space. The underlying system of PDE's is satisfied in a generalized sense. The solution semiflow enjoys the standard semigroup properties and the solutions coincide with the strong solutionsof the isentropic Euler system as long as the latter exists. Moreover, * *they minimize the energy (maximize the energy dissipation) among all generalized solutions. **(joint work with D.Breit and M.Hofmanova)* Tutti gli interessati sono invitati a partecipare. Classe di Scienze