Infosheet (April 4th, 2017) |
Queen's University - Department of Mathematics and Statistics |
Tuesday, April 4 |
Dynamics Seminar Time: 3.30 p.m. Place: Jeffery 422 |
Speaker: Julian Christopher, Queen’s University Title: The Poincaré-Bendixson Theorem Abstract Attached |
Wednesday, April 5 |
Curves Seminar Time: 3:30 pm. Place: Jeffery 422 |
Speaker: Mike Roth Title: Stable points and the one-parameter criterion Abstract Attached |
Thursday, April 6 |
Math Club Time: 5:30 p.m. Place: Jeffery 118 |
Speaker: Thomas Barthelmé Title: The Mathematics of Juggling Abstract Attached |
Friday, April 7 |
Number Theory Seminar Time: 10:30 a.m. Place: Jeffery 422 |
Speaker: Yu-Ru Liu, University of Waterloo Title: The circle method in function fields Abstract Attached |
Friday, April 7 |
Department Colloquium Time: 2:30 p.m. Place: Jeffery 234 |
Speaker: Fabrice Baudouin, University of Connecticut Title: Ricci curvature lower bounds in sub-Riemannian Abstract Attached |
Monday, April 10 |
Ph.D. Thesis Defense Time: 10:00 a.m. Place: Jeffery 521 |
Ph.D. Student: Peng-Jie Wong Title: Character Theory and Artin L-functions Supervisor: Ram Murty |
Wednesday, April 19 |
Ph.D. Thesis Defense Time: 1:00 p.m. Place: Jeffery 521 |
Ph.D. Student: Yinzheng Gu Title: Non-commutative Independences for Paris of Faces Supervisors: Jamie Mingo and Serban Belinschi |
Items for the Info Sheet should reach Anne ( burnsa@queensu.ca) by noon on Monday. The Info Sheet is published every Tuesday.
CALCULATOR EXAM POLICY , the official calculator is a Casio fx-991, or one with a blue sticker as issued by School of Business. All exam cover pages must only refer to these calculators only; any other exam cover, including other calculators (ie gold sticker) will not be accepted by the exams office. Proctors are going to be instructed to be less lenient with calculators that aren’t Casio fx-991 (or blue sticker from COMM), and will likely to be taking them away.
Tuesday, April 4, 3:30 p.m. Jeffery 422 - Dynamics Seminar
Speaker: Julian Christopher
Title: The Poincaré-Bendixson Theorem
Abstract: The Poincaré-Bendixson theorem completely describes the long-term behavior of a flow on (any open set of) the 2-sphere. Moreover, the basic ideas used in the proof can be very useful in similar contexts. We will present a proof of the theorem.
Wednesday, April 5, 3:30 p.m. Jeffery 422 - Curves Seminar
Speaker: Mike Roth
Title: Stable points and the one-parameter criterion
Abstract: We will discuss stability of points on with respect to a G-linearized line bundle, and the one-parameter criterion for semi-stability and stability.
Thursday, April 6, 5:30 p.m. Jeffery 118 - Math Club
Speaker: Thomas Barthelmé
Title: The Mathematics of Juggling
Abstract:
In this talk, we will see how to code a juggling pattern using periodic
sequences. Then, we will try to answer some, or all, of the following
questions: Given a periodic sequence, how can I tell if it corresponds to a
juggling pattern? And if it does, how many balls do I need to juggle it?
Finally, how many different juggling patterns of period $p$ can one do with
$b$ balls?
One thing we will not try to do in this talk, due to lack of expertise, is teach anyone how to actually juggle any of these patterns.
Friday, April 7, 10:30 a.m. Jeffery 422 - Number Theory Seminar
Speaker: Yu-Ru Liu
Title: The circle method in function fields
Abstract: We will introduce the circle method in function fields, and then apply it to study Waring's problem and Vinogradov's mean value theorem for polynomials. We will address possible problems arising in a positive characteristic setting. This is joint work with T. Wooley, W. Kuo and X. Zhao.
Friday, April 7, 2:30 p.m. Jeffery 234 - Department Colloquium
Speaker: Fabrice Baudouin
Title: Ricci curvature lower bounds in sub-Riemannian geometry
Abstract: In this talk, we will review the recent developments in the geometric analysis of the sub-Riemannian manifolds in which generalized notions of Ricci curvature lower bounds have been defined.