**Ian Agol (University of Califonia at Berkeley)**

*The Virtual Haken Conjecture*

Abstract: Waldhausen conjectured in 1968 that every aspherical 3-manifold has a finite-sheeted cover which is Haken (contains an embedded essential surface). Thurston conjectured that hyperbolic 3-manifolds have a finite-sheeted cover which fibers over the circle.

**Lecture 1**: An overview of 3-Manifold Topology

Date: Wednesday, October 14th, 2015

Time: 5:00pm-6:00pm

Location: Clark Hall #107

Abstract: The first lecture will be an overview of 3-manifold topology in order to explain the meaning Waldhausen's virtual Haken conjecture and Thurston's virtual fibering conjecture, and how they relate to other problems in 3-manifold theory.

**Lecture 2:** What is Geometric Group Theory?

Date: Thursday, October 15th, 2015

Time: 4:00pm-5:00pm

Location: Monroe Hall #116

Abstract: The second lecture will give some background on geometric group theory, including the topics of hyperbolic groups and CAT(0) cube complexes after Gromov, and explain how the above conjectures may be reduced to a conjecture of Dani Wise in geometric group theory.

**Lecture 3: **Geometric Group Theory and the Virtual Haken Conjecture

Date: Friday, October 16th, 2015

Time: 4:00pm-5:00pm

Location: Monroe Hall, # 116

Abstract: The third lecture will discuss the proof of Wise's conjecture, that cubulated hyperbolic groups are virtually special. Part of this result is joint work with Daniel Groves and Jason Manning. We will attempt to make these lectures accessible to a general mathematical audience at the level of a colloquium talk.

The University of Virginia Department of Mathematics is the host for this event. Should you have any question about this event, please contact the organizer: Slava Krushkal at krushkal@virginia.edu.

On October 14-16 Ian Agol of the University of California, Berkeley will give a three-lecture series, sponsored by the UVa Department of Mathematics and the Institute for Mathematical Sciences. The subject of the lectures is the Virtual Haken Conjecture, a major problem in 3-manifold topology recently resolved by the speaker. Ian Agol is a recipient of the 2013 Veblen Prize in Geometry, awarded by the American Mathematical Society, and he was a plenary speaker at the 2014 International Congress of Mathematicians. Times, locations, and abstracts can be found at the Virginia Mathematics Lectures web page. http://www.math.virginia.edu/lecture

The second issue of the Department's newsletter, "*Virginia Math Bulletin"* is now available.

The Mathematics Department Diploma Ceremony will be held May 18, 2014 (from 12:30-2:30pm) in the Lower Garden of Pavilion I. The inclement weather location is Gilmer Hall, Room 130 at 1:00pm. For information regarding the graduation on the Lawn, see www.virginia.edu/finals

The conference will focus on the interactions between homotopy theory and group cohomology, with special forcus on the contribution of Nicholas Kuhn.

http://pi.math.virginia.edu/topology/Conference2015/index.htmlThe Gordon E. Keller Mathematics Majors Dinner will be held on Thursday, April 9^{th}, 2015 at the Courtyard- Marriott located on Main Street.

This Dinner was conceived and organized by a former major advisor, Professor Gordon Keller, as a way of expressing the department’s appreciation for you. It is a great opportunity for all of you to connect with the faculty and other math majors in a relaxed and lighthearted environment.

In addition to a delicious dinner, there will be an awards presentation and a talk by Dr. Douglas Costa who was a former UVa Mathematics Professor. He is now the Director of Quantitative Research at Susquehanna Investment Group, LLP. Dr. Costa will present a talk "Mathematicians in Industry: The Unreasonable Effectiveness of a Mathematical Education."

Professor Andrew Obus will receive the University of Virginia All-University Teaching Award for 2014-2015. He was chosen to receive this award along with nine (9) other recipients for their excellence in teaching, research and service accomplishments.

The Frank Finger Graduate Fellowship Award for Teaching was awarded to Katelynn Kochalski. This award honors teaching assistants in the College of Arts & Sciences for their recognition of stimulating and organized classroom teaching

Congratulation** to: Danielle Jones, Megan Tracy, Anna Yanchenko, Ziyuan Jin and Siyao Chan**

As the oldest and most distinguished honor society in the country, Phi Beta Kappa offers membership to less than one percent of all undergraduates. Many of the leading figures in American history and culture have begun their careers with election to the society, including seventeen presidents of the United States. As a result, membership is a remarkable accomplishment, both for the student who achieves it and the faculty and staff whose support and guidance has led to this milestone.

April 6-8 Fields Medalist Vaughan Jones of Vanderbilt University will give a three-lecture series, sponsored by the UVa Department of Mathematics and the Institute for Mathematical Sciences. Times, locations, and abstracts can be found at the Virginia Mathematics Lectures web page.

http://math.virginia.edu/lecture