Title: Counting points on elliptic curves Speaker: Karl Rubin Summary: Elliptic curves are important for both theoretical and practical reasons, having applications to the proof of Fermat's Last Theorem and to cryptography. These lectures will introduce elliptic curves and describe some of the important results, algorithms, and applications in the field. The three lectures will be organized as follows. 1. Introduction to elliptic curves: overview and open problems. 2. Counting points over finite fields, and applications. 3. Ranks of elliptic curves: computing the rank, and searching for curves of large rank. Prerequisites: A solid background in basic abstract algebra will be assumed, but no prior knowledge of elliptic curves is needed.