**Date & Time:** Monday, April 21, 2014, 16:00-16:30.

**Venue:** IRCC Conference Room II, SOM-IRCC Building

**Title:** Arithmetic of elliptic curves and
congruences

**Speaker: ** Sudhanshu Shekhar, University of Heidelberg

**Abstract:** Congruence phenomena in arithmetic occur in a variety of ways and always
encode information of great interest. In this talk, we illustrate this by considering congruences of L-
values between elliptic curves whose residual galois representations are isomorphic.