主讲人：韩青 教授(Department of Mathematics, University of Notre Dame)

时  间： 6月18日上午8：30-11：30

          6月19日上午9：00-11：00

地  点： 数学科学学院101 教室

主  办： 数学科学学院

摘  要：Abstract: In 1983, F. Almgren introduced the concept of frequency for harmonic functions. In 1987, N. Garofalo and F.-H. Lin generalized such a notion to solutions of general homogeneous elliptic equations. It turns out that the concept of frequency plays an important role in the quantitative properties of solutions, such as doubling conditions, vanishing orders, quantitative unique continuation, etc. In this series of lectures, I will discuss frequency and its various applications.