Mathematisches Kolloquium

geplante Vorträge für das SS 2019: 23.05.2019; 13.06.2019

Die Vorträge der vergangenen Semester finden Sie in den Archiven unter Veranstaltungen-Mathe.

 


Donnerstag, 23. Mai 2019, 16:30 Uhr, ...

Prof. Dr. Edriss S. Titi (University of Texax, Weizmann Intitute of Science, University of Cambridge, zurzeit Einstein-Visiting-Fellow FU Berlin)

Thema: Is dispersion a stabilizing or destabilizing mechanism? Landau-damping induced by fast background  flows

Abstract: In this talk I will present a uni ed approach for the e ect of fast rotation and dispersion as an averaging mechanism for, on the one hand, regularizing and stabilizing certain evolution equations, such as the Navier-Stokes and Burgers equations. On the other hand, I will also present some results in which large dispersion acts as a destabilizing mechanism for the long-time dynamics of certain dissipative evolution equations, such as the Kuramoto-Sivashinsky equation. In addition, I will present some new results concerning two- and three-dimensional turbulent  flows with high Reynolds numbers in periodic domains, which exhibit "Landua-damping" mechanism due to large spatial average in the initial data.

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Donnerstag, 13. Juni 2019, 16:30 Uhr, ...

Prof. Alexander Koldobsky (University of Missouri)

Thema: t.b.a

Abstract: t..b.a.

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