## EVENT DETAILS AND ABSTRACT

**Topology Seminar**
**Title:** A formal group of height 2 over F_9

**Speaker:** Yifei Zhu

**Speaker Info:** Northwestern University

**Brief Description:**

**Special Note**:

**Abstract:**

Given E a Morava E-theory spectrum of height 2, its algebra of power
operations has the structure of a graded twisted bialgebra satisfying a Frobenius congruence. Given the K(1)-localization of E, its algebra of power operations has a single generator over the coefficient ring. We illustrate this structure and provide explicit formulas by doing
calculations, at the prime 3, with moduli of elliptic curves.

**Date:** Monday, October 21, 2013

**Time:** 4:10pm

**Where:** Lunt 104

**Contact Person:** Prof. Paul Goerss

**Contact email:** pgoerss@math.northwestern.edu

**Contact Phone:** 847-491-8544

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