UNB
Posted: December 28, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
ColloquiumSome results on Nicholson’s blowflies equations Yuming Chen (Wilfrid Laurier University) Tuesday, January 7, 2014 at 2:30 pm Tilley Hall Room 309 Data drawn from the comprehensive and elegant experiments performed by Nicholson on laboratory cultures of the sheep blowfly are used as illustrative examples of oscillatory population fluctuations...
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Posted: December 20, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
ColloquiumA Trip to the Tropics Joe Kileel (University of California, Berkeley) Tuesday, January 7, 2014 at 3:30 pm Tilley Hall Room 404 In the middle of winter, this talk will offer a trip to the tropics. Er, at least to tropical mathematics, where algebraic geometry is turned into polyhedral geometry, 1 + 1 = 1, and the picture below is of a smooth curve: By the end of the talk, that...
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Posted: December 13, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Grad Seminar Gelfand-Fuks Cohomology of the Formal Vector Fields Fereshteh Yazdani (UNB) Thursday, December 19, 2013 at 3:30 p.m. Tilley Hall Room 5 In my talk I will speak about the concept of spectral sequence which has a very important role in computing the cohomology and I will define the Gelfand-Fuks cohomology by introducing formal vector fields. Then by using the method of applying...
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Posted: December 3, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Colloquium Renormalization Group Approach to Quantum Gravity Gaurav Narain (Institute of Mathematical Sciences, India) Thursday, December 5, 2013 at 12:30 pm Tilley Hall Room 404 In the last century, theoretical physics witnessed two important major revolutions: Quantum Mechanics and General Relativity. First one addresses the physics at small scales while second one explains a large...
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Posted: December 3, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar Bosonic String in the Friedmann-Robertson-Walker Spacetime Shohreh Rahmati (UNB) Thursday, December 5, 2013 at 3:30 pm Tilley Hall Room 5 Bosonic strings are one-dimensional objects that propagate in a two-dimensional manifold embedded in a higher dimensional target space. The evolution of the string depends on the metric of the target space. In this talk, I will talk about the...
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Posted: December 3, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar K-Theory for Graph C*-Algebras Christopher Chlebovec (UNB) Friday, December 6, 2013 at 2:30 pm Tilley Hall Room 404 In C*- algebraic K-Theory, one associates to each C*-algebra a pair of abelian groups which contain a great deal of information about the C*-algebra. In my talk, I will discuss the construction of these groups and then focus my attention on computing the...
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Posted: December 2, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar Dynamics of the Wangersky-Cunningham Predator-Prey Model Xi Hu (UNB) Thursday, November 21, 2013 at 1:30 pm Tilley Hall Room 104 The Wangersky-Cunningham predator-prey model is a two dimensional model which adds a time lag into the Lotka-Volterra predator-prey model. The Wangersky-Cunningham Model assumes that the predator does not immediately convert consumed prey into...
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Posted: December 2, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar Extracting Energy from Black Holes Syed Moeez Hassan (UNB) Thursday, November 28, 2013 at 2:30 pm Tilley Hall Room 5 Einstein’s General Relativity is a theory of gravity that explains our universe on large scales. One of the solutions to Einstein’s equations is the Kerr solution which describes a rotating black hole. Roger Penrose suggested a method of extracting...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Colloquium Equivariant Index Theorem and the Van Est Map Xiang Tang (Washington University in St Louis) Thursday, October 31, 2013 at 3:30 pm Tilley Hall Room 5 Let H be a compact subgroup of a Lie group G. When G/H is not compact, G-invariant elliptic operator on G/H in general fails to be Fredholm. In this talk, we will explain an index theorem about such operators using...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Colloquium Non-commutative resolutions of singularities and the global spectrum Eleonore Faber (University of Toronto) Wednesday, November 13, 2013 at 2:30 pm Tilley Hall Room 302 This talk is about non-commutative analogs of resolutions of singularities. In short, non-commutative desingularizations of a commutative ring R are endomorphism rings of certain R-modules of finite global...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Colloquium Vortex Filament Dynamics Walter Craig (McMaster) Thursday, October 10, 2013 at 2:30 pm Tilley Hall Room 125 In this talk I will describe a problem in fluid dynamics concerning the interaction of two near-parallel vortex filaments in three dimensions. This is an example of phase space analysis of a partial differential equation (PDE) that can be formulated as a Hamiltonian...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Colloquium What Happened Before the Big Bang? Martin Bojowald (Penn State) Thursday, November 14, 2013 at 3:30 pm Tilley Hall Room 5 The standard model of cosmology suggests that the universe started with a phase of very high density, described by general relativity as a singularity. Quantum gravity attempts to resolve the singularity by a more fundamental, microscopic theory of...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar Differential Forms in Topology and Geometry Mohammed Alhumaidi (UNB) Thursday, November 7, 2013 at 3:30 pm Tilley Hall Room 5 We give a brief overview of differential forms and their properties, including Stoke’s theorem. The definition of de Rham cohomology is then given. This is followed by the presentation of two applications: the derivation of the Hopf invariant...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate Seminar Graph C*-Algebras Christopher Chlebovec (UNB) Thursday, October 17, 2013 at 3:30 pm Tilley Hall Room 5 Graph C*- algebras are a class of C*- algebras in which we can associate, to each directed graph, a unique C*- algebra. They encompass a large array of examples and allow us to encode the inherent properties of the C*- algebra by analyzing its corresponding graph. In this...
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Posted: November 29, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
UNB
Posted: November 27, 2013 4:00:00 AM AST
Category: News and Events
The Winter 2014 writing of the Math Placement Test will be on Wednesday, January 8 from 7-8 p.m. in Tilley Hall 125. This is for students intending to take MATH 1003 for the first time in Winter 2014. Note that if you have previously failed MATH 1003 or you have passed MATH 0863, you do not need to take the test. (More details)
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Posted: November 25, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
ColloquiumFinding The Hidden Space Behind Complex Networks: An Approach Using The New Theory Of Graph Limits Jeanette Janssen (Dalhousie) Wednesday, October 9, 2013 at 2:30 pm Carleton Hall Room 306 Many real-life networks can be modeled by stochastic processes with a spatial embedding. In such processes, the link probability decreases with distance. The spatial embedding can be seen...
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Posted: November 25, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
ColloquiumNoncommutative Rational Singularities Kenneth Chan (University of Washington in Seattle) Thursday, September 12, 2013 at 3:30 pm Tilley Hall Room 125 We introduce the notion of Brauer log pairs and explain their connection with noncommutative algebraic geometry. There is a theory, analogous to the log MMP, which provides terminal models for Brauer log pairs over surfaces. We define...
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Posted: November 25, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
ColloquiumSingular Differential Equations and the Stokes Groupoids Brent Pym (McGill) Thursday, September 5, 2013 at 3:30 pm Tilley Hall Room 125 Solutions of ordinary differential equations typically behave quite badly near an irregular singular point, exhibiting essential singularities and divergent power series expansions. In recent work with Marco Gualtieri and Songhao Li, we use methods...
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Posted: November 25, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Graduate SeminarModeling a Biological Invasion by Integrodifference Equation Ali Gharouni (UNB) Thursday, October 3, 2013 at 3:30 pm Tilley Hall Room 224 An integrodifference equation model is one of several types of mathematical models (ODE, PDE, delay, stochastic,…) that are used to study and predict the dynamics of a biological invasion. Integrodifferences incorporate models for...
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Posted: November 23, 2013 4:00:00 AM AST
Category: News and Events
From the Canadian Mathematics Society website: The Canadian Mathematical Society (CMS) is pleased to announce that Harold Edward Alexander (Eddy) Campbell (University of New Brunswick) is the recipient of the 2013 Graham Wright Award for Distinguished Service. The Graham Wright Award for Distinguished Service is awarded annually to an individual who has made significant contributions to the...
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Posted: November 23, 2013 4:00:00 AM AST
Category: News and Events
From the Atlantic Association of Research in the Mathematical Sciences (AARMS) website: The Canadian Mathematical Society (CMS) has just announced that Professor John Grant McLoughlin of the University of New Brunswick is the recipient of the 2013 Adrien Pouliot Award in recognition of his outstanding contributions to mathematics education in Canada. The award will be presented at the 2013 CMS...
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Posted: November 23, 2013 4:00:00 AM AST
Category: News and Events
From the UNB newsroom: A postdoctoral researcher in the University of New Brunswick’s department of mathematics and statistics has been awarded a major grant of over $139,000 to study the fundamental nature of time in the universe. “’What is time?’ is an ancient question that has puzzled human beings since the beginning of civilization, and remains unsolved today,” says Dr. Tim Koslowski, a...
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Posted: November 23, 2013 4:00:00 AM AST
Category: News and Events
Congratulations to Mathematics undergradate students Mathieu Girard and Yuhuai (Tony) Wu, who placed second in the Science Atlantic Mathematics Competetion held at the University of Prince Edward Island on October 18, 2013.
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Posted: November 19, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Masters of Science Oral ExaminationDynamics of a Pathogen-immune Interaction Model Nora Alshobrami (UNB) Wednesday, September 4, 2013 at 2:30 pm Carleton Room 255 A new mathematical model is proposed to describe the interaction between the virus and the immune cells. For this new model, we study the existence of non-negative equilibrium, the bifurcation, the stability of equilibrium. We also...
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Posted: November 18, 2013 4:00:00 AM AST
Category: Seminars and Colloquia
Masters of Science Thesis DefensePrimordial fluctuations from deformed uncertainty relations Andrew Day (UNB) Monday, August 19, 2013 at 2:00 pm Tilley Hall Room 104 We consider the effects of modified uncertainty relations on the generation of primordial perturbations during inflation. Our approach involves high-energy deformations of the commutator algebra between the Fourier-transformed...
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