UAlberta

Wed 26 Nov 2014, 3:00pm
CRG Geometry and Physics Seminar
ESB 4127 (host: UAlberta)

TBA

ESB 4127 (host: UAlberta)
Wed 26 Nov 2014, 3:00pm4:00pm
Abstract
TBA
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Warwick University

Wed 26 Nov 2014, 3:10pm
Probability Seminar
ESB 2012

Phase Transitions in Continuum Delaunay Potts Models

ESB 2012
Wed 26 Nov 2014, 3:10pm4:10pm
Abstract
We discuss recent results on phase transitions of Delaunay Potts models in dimension two where the interaction depends on Delaunay edges respectively Delaunay triangles.
This work is an extension of the Lebowitz & Lieb softcore continuum Potts model to geometrically dependent interaction systems. The main tool is a FK (FortuinKasteleyn) random cluster representation adapted to the Delaunay structure and percolation in the FK model. If time permits we discuss the VoronoiIsing model where the interaction is function of the length of the common boundary and its connection to variants of the RSW (RussoSeymourWelsh) theorem in continuum percolation.
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MIT

Wed 26 Nov 2014, 3:15pm
Topology and related seminars
ESB 4133

The six operations of Grothendieck in equivariant motivic homotopy theory

ESB 4133
Wed 26 Nov 2014, 3:15pm4:15pm
Abstract
The formalism of six operations encodes the functorial behavior of (co)homology theories. It was first introduced by Grothendieck for the ladic cohomology of schemes, and was later developed in a variety of other geometric contexts: Dmodules on schemes, spectra parametrized by topological spaces, motivic spectra parametrized by schemes, etc. Equivariant homotopy theory is also best understood as a formalism of six operations for topological stacks.
In this talk I will discuss the basics and the significance of this formalism, and I will then describe an extension of motivic homotopy theory to algebraic stacks.
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Witwatersrand University

Wed 26 Nov 2014, 3:30pm
Symmetries and Differential Equations Seminar
MATH 125

Symmetry structures of manifolds Part II

MATH 125
Wed 26 Nov 2014, 3:30pm4:30pm
Abstract
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Oxford University

Thu 27 Nov 2014, 3:30pm
Number Theory Seminar
room MATH 126

Autocorrelations of divisor functions in function fields

room MATH 126
Thu 27 Nov 2014, 3:30pm4:30pm
Abstract
In this seminar I will discuss a function field analogue of a classical problem in analytic number theory, concerning the autocorrelations of divisor functions, in the limit of a large finite field.
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University of Oregon

Fri 28 Nov 2014, 2:00pm
SPECIAL
Diff. Geom, Math. Phys., PDE Seminar
ESB 4133 (PIMS lounge)

Geometric flow on almost Hermitian manifolds

ESB 4133 (PIMS lounge)
Fri 28 Nov 2014, 2:00pm3:00pm
Abstract
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UBC

Fri 28 Nov 2014, 3:00pm
Department Colloquium
MATX 1100

Graduate Research Award lecture: Magnetized Target Fusion: Insights from Mathematical Modelling

MATX 1100
Fri 28 Nov 2014, 3:00pm4:00pm
Abstract
Magnetized target fusion reactors are a modern design to for hydrogen fusion energy on earth. The design entails confining a plasma with a magnetic field and crushing it in an imploding shell of molten metal. Such a design has many unresolved questions in terms of its feasibility as a power source and the most important elements in making it efficient. In this talk, we will look into two of the approaches undertaken to explore these questions. Firstly, through a coordinate transformation and implementing a novel fluxlimited, splitstep, finite volume scheme for nonlinear coupled hyperbolic partial differential equations, we do a parameter sensitivity analysis for the design performance. Secondly, by a careful series of asymptotic arguments, we establish a leading order asymptotic expression for the plasma compression. This expression is qualitatively consistent with the numerical work, but it also gives new insights into how the device operates. We will conclude with a look into the viability of magnetized target fusion and its future work.
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UBC

Mon 1 Dec 2014, 3:00pm
CRG Geometry and Physics Seminar
ESB 4127 (host: UBC)

The topological Fukaya category and mirror symmetry for toric CalabiYau threefolds

ESB 4127 (host: UBC)
Mon 1 Dec 2014, 3:00pm4:00pm
Abstract
The Fukaya category of open symplectic manifolds is expected to have good localtoglobal properties. Based on this idea several people have developed sheaftheoretic models for the Fukaya category of punctured Riemann surfaces: the name topological Fukaya category appearing in the title refers to the (equivalent) constructions due to DyckerhoffKapranov, Nadler and SibillaTreumannZaslow. In this talk I will introduce the topological Fukaya category and explain applications to Homological Mirror Symmetry for toric CalabiYau threefolds. This is work in progress joint with James Pascaleff.
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Note for Attendees
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