Infosheet (October 24th, 2017)

Queen's University - Department of Mathematics and Statistics


Wednesday, October 25

Number Theory Seminar

Time: 1:30 p.m.

Place: Jeffery 319

Speaker: Richard Leyland

Title: Galois Representations of CM Elliptic Curves

Abstract Attached

Wednesday, October 25

Curves Seminar

Time: 3:30 p.m.

Place: Jeffery 319

Speaker: Mike Roth

Title: First applications of the connectedness theorem

Abstract Attached

Friday, October 27

Graduate Student Seminar

Time: 11:30 a.m.

Place: Jeffery 422

Speaker: Manjul Bhargava

Title: Patterns in Numbers and Nature (Public Lecture Video, 2016)

Abstract Attached

Friday, October 27

Department Colloquium

Time: 2:30 p.m.

Place: Jeffery 234

Speaker: Daniel Wise, McGill University

Title: The Cubical Route to Understanding Groups

Abstract Attached

Monday, October 30

Dynamics Seminar

Time: 4:00 p.m.

Place: Jeffery 422

Speaker: Tariq Osman, Queen’s University

Title: Ergodicity of the geodesic flow via Hopf’s argument

Abstract Attached

Monday, October 30

Geometry and Representation Theory Seminar

Time: 4:45 p.m.

Place: Jeffery 319

Speaker: Ba Nguyen, Queen’s University

Title: New formulas for cluster monomials of Type A quivers

Abstract Attached

Items for the Info Sheet should reach Anne ( burnsa@queensu.ca) by noon on Monday. The Info Sheet is published every Tuesday.


Wednesday, October 25, 1:30 p.m. Jeffery 319 - Number Theory Seminar

Speaker: Richard Leyland

Title: Galois representations of CM Elliptic Curves

Abstract: We introduce the notion of the mod-N Galois representation $\rho_{E/F,N}$ attached to an elliptic curve $E/F$. Motivated by conjectures of Frey and Mazur, we aim to determine all elliptic curves $E’/F$ such that $\rho_{E’/F,N}\cong \rho_{E/F,N}$ in the case where both $E$ and $E’$ have complex multiplication. In this talk, we introduce the problems, terminology currently being worked on and present a small result in the case where $E$ and $E’$ have complex multiplication by different imaginary quadratic fields.


Wednesday, October 25, 3:30 p.m. Jeffery 319 - Curves Seminar

Speaker: Mike Roth

Title: First applications of the connectedness theorem

Abstract: We will deduce some consequence of the connectedness theorem, giving applications to fundamental questions about embeddings of varieties.


Friday, October 27, 11:30 a.m. Jeffery 422 - Graduate Student Seminar

Speaker: Manjul Bhargava

Title: Patterns in Numbers and Nature (Public Lecture Video, 2016)

Abstract: Each year, the Fields Institute holds the Fields Medal Symposium to showcase and celebrate the work of a Fields Medalist. Join us to watch the Public Opening of the 2016 Fields Medal Symposium, featuring a lecture for a general audience by Professor Manjul Bhargava (Fields Medal 2014).


Friday, October 27, 2:30 p.m. Jeffery 234 - Department Colloquium

Speaker: Daniel Wise

Title: The Cubical Route to Understanding Groups

Abstract: Cube complexes have come to play an increasingly central role within geometric group

theory, as their connection to right-angled Artin groups provides a powerful combinatorial bridge between geometry and algebra. This talk will introduce nonpositively curved cube complexes, and then describe the developments that recently culminated in the resolution of the virtual Haken conjecture for 3-manifolds, and simultaneously dramatically extended our understanding of many infinite groups.


Monday, October 30, 4:00 p.m. Jeffery 422 - Dynamics Seminar

Speaker: Tariq Osman

Title: Ergodicity of the geodesic flow via Hopf’s argument

Abstract: In this talk we will see the proof that the geodesic flow on a surface of constant negative curvature is ergodic. The proof uses the ergodic theorem and the so-called “Hopf’s argument”. Time permitting, we will also discuss how to prove mixing of the geodesic flow.


Monday, October 30, 4:45 p.m. Jeffery 319

Geometry and Representation Theory Seminar

Speaker: Ba Nguyen

Title: New formulas for cluster monomials of Type A quivers

Abstract: We introduce a new kind of combinatorial formula for the cluster monomials in terms of the so-called globally compatible collections. We give bijective proofs of these formulas by comparing with the well-known combinatorial models of the T-paths and of the perfect matchings in a snake diagram.

Contact Info

Department of Math & Stats
Jeffery Hall, 48 University Ave.
Kingston, ON Canada, K7L 3N6
Phone: (613) 533-2390
Fax: (613) 533-2964
mathstat@mast.queensu.ca
Office Hours: 8:30am-12:00pm & 1:00pm-4:30pm

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