Herbstsemester 2019
Lawrence C. Evans
(University of California, Berkeley)
Weak Convergence Methods for Nonlinear Partial Differential Equations


This course will be an ambitious survey of rigorous methods for understanding solutions uε of various nonlinear PDE in various asymptotic limits. Assuming in particular that the uε converge weakly as ε → 0, we want to identify what PDE the weak limit u solves. This can be a hugely complicated problem, since the weak convergence is usually incompatible with the nonlinearities; but a rich variety modern techniques can handle these issues for many interesting cases.

The lectures will discuss recent developments concerning
(i) asymptotics for ODE,
(ii) maximum principle methods,
(iii) convexity and monotonicity,
(iv) oscillations and compensated compactness, and
(v) defect measures,
with many examples and applications.

Time:             Tuesdays 10-12
Auditorium:  HG G 43 (HWZ)
Begins:          September 24, 2019

M. Struwe