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.