Author

Cody Gunton

Date of Award

2012

Document Type

Thesis

Degree Name

Bachelors

Department

Natural Sciences

First Advisor

McDonald, Patrick

Keywords

Bost-Connes Systems, Explicit Class Field Theory, C* Dynamical System

Area of Concentration

Mathematics

Abstract

Following the 1995 paper of Bost and Connes, which defined the Bost-Connes system C_Q, we define and study a C*-dynamical system C_Qp related to the class field theory of Qp. We consider quotients of a pair (?,?_0) of discrete two-by-two matrix groups and show that there is a map from the corresponding Hecke algebra A(?, ?_0) to the algebra of unitary operators on \ell^2(?/?_0). Extending this map to the closure of A(?,?_0) in a regular representation of \ell^2(?/?_0) gives C_Qp. A presentation in terms of two classes of generators is given, and is used to find a representation of A(?,?_0), which is conjectured to extend to a covariant representation of C_Qp having partition function equal to the Euler factor of the Riemann zeta function at p.

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