Welcome to the Department of Mathematics
What's Happening This Week In Mathematics....
SFU/UBC Number Theory Seminar
Thursday, January 29, 2015  3:30 pm  ASB 10940
Speaker: Nils Bruin (SFU)
Title: Genus 2 curves with (3, 3)isogenies and 3torsion in Sha
Abstract: We parametrize genus 2 curves with a maximal isotropic (Z/3)^2 in their Jacobian, together with an explicit description of the associated isogeny. This allows us to perform (3, 3)isogeny descent on various simple principally polarized abelian surfaces and exhibit nontrivial 3part in their TateShafarevich groups. This is joint work with Victor Flynn and Damiano Testa.
CSC Weekly Seminar  Richard Vaughan
Friday, January 30, 2015
TASC2, Rm 8500
2:30 pm
Speaker: Richard Vaughan, SFU
Title: “Intelligent" Interactions with Surprisingly Simple Robots
Abstract: Sensing and state estimation for autonomous mobile robots has improved dramatically in the last few years, but we do not see robots around us yet. How should robots behave around people and each other to get things done? My group works on behavioural strategies for mobile robots that exploit the new sensing capabilities, and allows them to perform sophisticated, robust interactions with the world and other agents.
I’ll show videos of a series of novel visionmediated HumanRobot Interactions with teams of driving and flying robots. I’ll also describe work on adaptive path planning and task allocation where we reach very good performance on hard optimization problems.
In most cases the mechanisms we use are surprisingly simple, and we like it that way.
Richard Vaughan is Associate Professor of Computing Science at Simon Fraser University, where he directs the Autonomy Lab.
http://autonomylab.org
Daily News
 Dr. Brenda Davison is profiled in Healthy Campus Community
 Dr. Cedric Chauve is Featured in the Vancouver Sun
 Genetic Stud Sheds Light On How Mosquitoes Transmit Malaria
 MEDIA RELEASE: Priming Aboriginal High School Students for University
 Event: 56th annual meeting of the Canadian Operational Research Society (CORS) in Ottawa.
 St. John Brebeuf math students participate in SFU event
 From the successful PhD defense of Sophie Burrill
 Dr. Manfred Trummer, Mathematics Chair is mace bearer for SFU Convocation Ceremony
 SFU summer camp encourages postsecondary education for indigenous students
 SFU launches inaugural Aboriginal math/english camp
 Researchers put math to work for BC Ferries
 Scientists & Dessert Fans Come Together for Pi Day!
 Vancouver Celebrates Pi Day with Experiments and Pie!
 Math Catcher
 Natalia Kouzniak: Triumphing
 Pancakes with a Side of Math
 PIMS Education Prize
 SSHRC Insight Award!
 Bob Russell: Influential Math Prof
 University Course Selection Problem
 Case Study for Food Truck
 Undergrad Operation Research
 Spreading Food Trucks
 Aboriginal Program
Upcoming Events

Discrete Math Seminar
1:30 PM  2:30 PM
February 3, 2015No Description 
Discrete Math Seminar
1:30 PM  2:30 PM
February 3, 2015Speaker: Manuel Kauers (RISC) Title: Walks in the Quarter Plane with Multiple Steps 
Operations Research Seminar
2:30 PM  3:30 PM
February 5, 2015Abstract: In this talk, we propose an explicit exchange algorithm for solving semiinfinite programming problem (SIP) with secondorder cone (SOC) constraints. We prove, by using the slackness complementarity conditions, that the algorithm terminates in a finite number of iterations and the obtained solution sufficiently approximates the original SIP solution. In existing studies on SIPs, only the nonnegative constraints were considered, and hence, the slackness complementarity conditions were separable to each component. However, in our study, the existing componentwise analyses are not applicable anymore since the slackness complementarity conditions are associated with SOCs. In order to overcome such a difficulty, we introduce a certain coordinate system based on the spectral factorization. In the numerical experiments, we solve some test problems to see the effectiveness of the proposed algorithm. Speaker: SoonYi Wu Title: On finite convergence of an explicit exchange method for convex semiinfinite programming problems with secondorder cone constraints 
Number Theory Seminar
3:30 PM  4:30 PM
February 5, 2015Abstract: Darmon outlined a program which is suited to potentially resolving one parameter families of generalized Fermat equations. He gave explicit descriptions of Frey representations and conductor calculations for Fermat equations of signature (p,p,r). Somewhat less explicit results are stated for signature (r,r,p), and even less for signature (q,r,p). For the equation (r,r,p), there are at least three competing Frey curve constructions: superelliptic curves of hypergeometric type due to Darmon, hyperelliptic curves due to Kraus, and elliptic curves with models over totally real fields due to Freitas. I will survey these Frey curve constructions and end by giving explicit Frey hyperelliptic curves for signatures (2,r,p) and (3,5,p). Speaker: Imin Chen (SFU) Title: Some explicit Frey hyperelliptic curves 
Discrete Math Seminar
1:30 PM  2:30 PM
February 17, 2015No Description 
Discrete Math Seminar
1:30 PM  2:30 PM
February 24, 2015No Description