Welcome to the Department of Mathematics
What's Happening This Week In Mathematics....
CSC Weekly Seminar
Friday, January 23, 2015
2:30 pm
TASC2, Rm 8500
Speaker : Jan Bouwe van den Berg (VU University Amsterdam)
Title: Validated Computations in ODEs and PDEs
Abstract: We often simulate dynamics on a computer, or calculate a numerical solution to
a partial differential equation. This gives very detailed, stimulating
information. However, it would be even better if we can be sure that what we
see on the screen genuinely represents a solution of the problem. In
particular, rigorous validation of the computations would allow such objects to
be used as ingredients of theorems. The past few decades have seen enormous
advances in the development of computer assisted proofs in dynamics. Attention
is now turning to infinite dimensional nonlinear dynamics generated by PDEs,
integral equations, delay equations, and infinite dimensional maps. In this
talk we will review recent developments, such as connecting orbit problems in
pattern formation, as well as applications in the setting of spatiotemporal
periodicity.
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

PIMS Distinguished lecture; lunch provided
12:30 PM  2:30 PM
January 27, 2015Speaker: Michael Singer (NCSU) (PIMS Distinguished Visitor) Location: Irmacs Title: Differential Groups and the Gamma Function PROGRAM: 12:30  1:29 Lunch Reception at IRMACS 1:30  2:20 Presentation Abstract: In 1887, Hoelder proved that the Gamma Function, defined by the difference equation y(x+1) = x y(x), satisfies no nonzero polynomial differential equation with complex coefficients. In the last several years Galois theories have been developed that reprove this result and allow one to characterize when functions satisfying certain linear differential or difference equations also satisfy auxiliary difference or differential equations. These Galois theories allow one to reduce such kinds of questions to questions concerning linear differential or difference groups, that is groups of matrices whose entries are functions satisfying a fixed set of differential or difference equations. I will give an introduction to the theory of these groups and the related Galois theories and survey recent results applying these theories to questions of functional transcendence. 
SFU/UBC Number Theory Seminar
3:30 PM  4:30 PM
January 29, 2015Speaker: 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. 
Discrete Math Seminar: Manuel Kauers
1:30 PM  2:30 PM
February 3, 2015Tuesday February 3, 1:30PM k9509 Speaker: Manuel Kauers (RISC) Title:Walks in the Quarter Plane with Multiple Steps 
Discrete Math Seminar
1:30 PM  2:30 PM
February 3, 2015No Description 
Operations Research Seminar: SoonYi Wu
2:30 PM  3:30 PM
February 5, 2015Title: On finite convergence of an explicit exchange method for convex semiinfinite programming problems with secondorder cone constraints Abstract: 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. 
Discrete Math Seminar
1:30 PM  2:30 PM
February 17, 2015No Description