Isogenies of elliptic curves and the K(2)-local sphere
Speaker:
Mark Behrens, Massachusetts Institute of Technology
Date and Time:
Thursday, September 30, 2004 - 9:30am to 10:30am
Location:
Fields Institute, Room 230
Abstract:
Jack Morava showed that one could study the K(n)-local sphere in terms of the action of the group automorphisms of a height n formal group on its Lubin-Tate moduli space of deformations. For n = 2, one can take the height 2 formal group to be the formal completion of a supersingular elliptic curve. I will describe a piece of the K(2)-local sphere that you get from considering certain isogenies of this elliptic curve, and how it relates to the whole sphere. This approach will be compared to that of Goerss, Henn, Mahowald, and Rezk.