K-theory, Representation Theory and Automorphic Forms
September 11-12, Sheffield

Organized by Paul Mitchener, Roger Plymen and Haluk Sengun



Automorphic forms are central objects in modern number theory with fascinating connections to many other parts of mathematics. The cohomological interpretation of modular forms, going back to works of Eichler and Shimura in the 1950's, is a key approach to automorphic forms that relates the cohomology of arithmetic manifolds to automorphic forms through representation theory of Lie groups. 

The recent paper [BS16] studies the K-theory/K-homology of certain C*-algebras ("arithmetic C*-algebras") that naturally arise from arithmetic manifolds. The results obtained in this paper raise the possibility of an approach to automorphic forms via the K-groups of arithmetic C*-algebras, akin to the well-known cohomological approach to automorphic forms. Our meeting will bring together a small group of experts in K-theory, representation theory and automorphic forms in order to develop these ideas.


Participants: 
Anne-Marie Aubert (Paris)
Tobias Berger (Sheffield)
Neil Dummigan (Sheffield)
Sergio Mendes (Lisbon)
Bram Mesland (Bonn) 
Paul Mitchener (Sheffield)
Roger Plymen (Southampton)
Thomas Schick (Goettingen)*
Haluk Sengun (Sheffield)
Christian Voigt (Glasgow)
Nick Wright (Southampton)
Joachim Zacharias (Glasgow)





Supported by 
MSRC of the University of Sheffield
and