Diff. Geom, Math. Phys., PDE Seminar: Emil Wiedemann

  • Date: 09/18/2012
  • Time: 15:30
Emil Wiedemann, UBC

University of British Columbia


Since the famous work of V. Scheffer about 20 years ago,
it has been known that the Cauchy problem for the incompressible Euler
equations has non-unique weak solutions. Recently, De Lellis and
Szekelyhidi demonstrated that this phenomenon can be viewed as an
instance of the so-called h-principle, thereby providing a shorter and
more general proof of the non-uniqueness. In this talk I will briefly
review their method and then present some subsequent results, including
global existence and non-uniqueness for 3D Euler, the approximation of
measure-valued solutions by weak ones, and non-uniqueness for shear
flow initial data.

Other Information: 

Location: ESB 2012