Department of

# Mathematics

Seminar Calendar
for events the day of Wednesday, October 11, 2017.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
    September 2017          October 2017          November 2017
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1  2    1  2  3  4  5  6  7             1  2  3  4
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Wednesday, October 11, 2017

3:00 pm in 243 Altgeld Hall,Wednesday, October 11, 2017

#### An overview of the theory of the Riemann zeta-function

###### Siegfred Baluyot (UIUC)

Abstract: This will be a motivated survey of some of the main lines of inquiry in the theory of the Riemann zeta-function. After a brief introduction to zeta and its connection to the prime numbers, we will discuss some of the advances in the subject that were made in recent decades.

4:00 pm in 245 Altgeld Hall,Wednesday, October 11, 2017

#### Lecture II. The complexity of classification problems in ergodic theory

###### Alexander Kechris (Caltech)

Abstract: The Trjitzinsky Memorial Lectures will be held October 10-12, 2017.Alexander Kechris will present "A descriptive set theoretic approach to problems in harmonic analysis, ergodic theory and combinatorics." Descriptive set theory is the study of definable sets and functions in Polish (complete, separable metric) spaces, like, e.g., the Euclidean spaces. It has been a central area of research in set theory for over 100 years. Over the past three decades, there has been extensive work on the interactions and applications of descriptive set theory to other areas of mathematics, including analysis, dynamical systems, and combinatorics. My goal in these lectures is to give a taste of this area of research, including an extensive historical background. These lectures require minimal background and should be understood by anyone familiar with the basics of measure theory and functional analysis. Also the three lectures are essentially independent of each other.

4:00 pm in Altgeld Hall 141,Wednesday, October 11, 2017

#### Hurwitz number

###### Hao Sun (Illinois Math)

Abstract: I will say something about Hurwitz number in algebraic geometry.