University of Sydney

    School of Mathematics and Statistics

    Algebra Seminar

    Brian Conrad
    Harvard University

    Deformation theory of Galois Representations for the non-expert

    Friday 24th July, 12-1pm, Carslaw 273.

    Our aim is to give some idea (to a non-number theorist) of what Mazur's deformation theory of Galois representations is about and how its applicability to the study of elliptic curves has been extended by Wiles in his work on Fermat's Last Theorem, and modularity of elliptic curves.

    The Taniyama-Shimura Conjecture relates, in a very non-trivial way, the algebraic theory of elliptic curves and the analytic theory of modular forms. We will use Wiles' reformulation of this conjecture in terms of deformation theory as a means of indicating what the deformation theory can do.

    Extending these methods to more elliptic curves has required some generalizations of the deformation problems considered. We will conclude with some remarks about this work.