Analysis seminar: Donatella Danielli

Speaker: Donatella Danielli, Perdue University, West Lafayette, USA. 

Title: Frequency functions, monotonicity formulas, and the free
boundary in the thin obstacle problem.

Abstract: Monotonicity formulas play a pervasive role in the study of
variational inequalities and free boundary problems. In this talk we
will describe a new approach to a classical problem, namely the thin
obstacle (or
Signorini) problem, based on monotonicity properties for a family of
so-called frequency functions.