ZetaValue2019iTHEMS Special Mathematics Colloquium
 Date
 March 21 at 14:00  17:30, 2019 (JST)
 Speakers

 Prof. Kohji Matsumoto (Professor, Nagoya University)
 Prof. Jörn Steuding (University of Würzburg, Germany)
 Venue
 Language
 English
Prof. Kohji Matsumoto (Nagoya University)
"An overview of the theory of multiple zetafunctions"
Multiple zetafunctions are generalizations of the Riemann zetafunction, and its theory has been rapidly developed in these decades. It is connected with various fields of mathematics and mathematical physics. In this talk I will give an overview of some part of recent developments, mainly from the analytic viewpoint.
Prof. Jörn Steuding (University of Würzburg, Germany)
"On the Infinite in Number Theory"
Beginning with two simple examples from elementary number theory (one of diophantine origin and one of arithmetical nature), we discuss the role of “infinity” in number theory. We touch upon topics like how to find good rational approximations to irrational quantities and the distribution of prime numbers. We conclude with a motivation of the big open question in this field, namely, the Riemann hypothesis (one of the six unsolved millennium problems) and the Langlands program.