In this talk we will discuss global well-posedness and scattering for the defocusing, cubic 3D problem with radial data. To prove this it is useful to use hyperbolic coordinates.
Global well-posedness and scattering for the 3D cubic nonlinear wave equation Sponsored by the Meyer Fund
Apr. 20, 2017 2pm (Math 220)
Lie Theory
Steve Butler (Iowa State)
X
We give an introduction to parking functions, give basic counts, and discuss a generalization to trees. In this latter setting we look at using generating functions to help efficiently count the number of these parking functions.
Parking functions and parking functions on trees
Apr. 20, 2017 3pm (MATH 220)
Probability
Miklos Z. Racz (Microsoft Research, Redmond)
X
If you add an edge to a random graph, do its conductance properties almost always get better? Perhaps surprisingly the answer is no, and I will discuss how this is connected to delocalization properties of eigenvectors. This is based on joint work with Ronen Eldan and Tselil Schramm.
Braess's paradox for the spectral gap in random graphs and delocalization of eigenvectors
Global well-posedness and scattering for the 3D cubic nonlinear wave equation