Gaussian stationary processes: a spectral perspective

Speaker
Dr. Naomi Feldheim (Weizmann Institute)
Date
03/12/2017 - 13:00 - 12:00Add to Calendar 2017-12-03 12:00:00 2017-12-03 13:00:00 Gaussian stationary processes: a spectral perspective A Gaussian stationary process is a random function f:R-->R or f:C-->C,  whose distribution is invariant under real shifts, and whose evaluation at  any finite number of points is a centered Gaussian random vector. The mathematical study of these random functions goes back at least 75 years,  with pioneering works by Kac, Rice and Wiener.  Nonetheless, many basic questions about them, such as the fluctuations of their number of zeroes, or the probability of having no zeroes in a large region, remained unanswered for many years. In this talk, we will provide an introduction to Gaussian stationary process and  describe how a new spectral perspective, combined with tools from harmonic, real and  complex analysis, yields new results about such long-lasting questions. Colloquium room, Mathematics Dept. building 216 אוניברסיטת בר-אילן - Department of Mathematics mathoffice@math.biu.ac.il Asia/Jerusalem public
Place
Colloquium room, Mathematics Dept. building 216
Abstract

A Gaussian stationary process is a random function f:R-->R or f:C-->C, 
whose distribution is invariant under real shifts, and whose evaluation at 
any finite number of points is a centered Gaussian random vector.
The mathematical study of these random functions goes back at least 75 years, 
with pioneering works by Kac, Rice and Wiener. 
Nonetheless, many basic questions about them, such as the fluctuations of their number of zeroes,
or the probability of having no zeroes in a large region, remained unanswered for many years.

In this talk, we will provide an introduction to Gaussian stationary process and 
describe how a new spectral perspective, combined with tools from harmonic, real and 
complex analysis, yields new results about such long-lasting questions.

Last Updated Date : 27/11/2017