Tuesday, April 19, 2011 - 11:00
1 hour (actually 50 minutes)
Penn State University and Yeshiva University,
We consider Riemann problems for the compressible Euler system in aerodynamics in two space dimensions. The solutionsinvolve shock waves, hyperbolic and elliptic regions. There are also regions which we call semi-hyperbolic. We have shownbefore the existence of such solutions, and now we show regularity of the boundaries of such regions.