Abstract: 

The traditional multiple zeta values (MZVs) are the real numbers $\zeta(k_1,\dots,k_r)$ defined as the sums $\sum_{01$) to a certain symmetrized version of the classical MZVs.  A special case that will be discussed in more detail is given by the ``Sun sums" $V(i,j)\in\mathcal A$ ($i,j\in\Bbb Z$, $j\ge0$) whose value at $p$ is $\sum_{0

Bio-Sketch: 

Don Zagier is a pure mathematician of broad interests, but working primarily in the domain of number theory. He received his PhD at the age of 20 under the supervision of Friedrich Hirzebruch at the University of Bonn in 1972, where he was appointed professor four years later. In his celebrated work with Benedict Gross he proved in 1986 Gauss’s class number problem for imaginary quadratic number fields with implications for special cases of the Birch and Swinnerton–Dyer conjecture. His students include Maxim Kontsevich and Maryna Viazovska. He held various prestigious positions including the directorship of the Max Planck Institute for Mathematics in Bonn from 1995 to 2019, a professorship at the Coll`ege de France in Paris from 2006 to 2014, and the Ramanujan International Chair at the ICTP in Trieste in 2022. Zagier has earned numerous awards and honors including the Cole Prize in Number Theory in 1987, the von Staudt Prize in 2001, and the Heinz Gumin Prize in 2024. He became a member of the German National Academy of Sciences Leopoldina in 1998, of the National Academy of Sciences of the United States in 2017, and a honorary member of the London Mathematical Society in 2019.