University of Alberta at Edmonton

Wed 1 Nov 2017, 3:00pm
Probability Seminar
ESB 2012

FeynmanKac formula for the stochastic heat equation driven by general Gaussian noises

ESB 2012
Wed 1 Nov 2017, 3:00pm4:00pm
Abstract
In this talk I will present some results on stochastic heat equations driven by a Gaussian noises. I will focus on FeynmanKac representation of the solution and the moments of the solution. Both lower and upper bounds for the L^p moments of the solution are obtained which is relevant to the socalled intermittency. The Driving Gaussian noises include fractional Brownian fields of Hurst parameters greater or smaller than 1/2.
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UBC

Wed 1 Nov 2017, 3:15pm
Topology and related seminars
ESB 4133

Symmetric Powers and the Dual Steenrod Algebra  Part 2

ESB 4133
Wed 1 Nov 2017, 3:15pm4:15am
Abstract
In episode 2 of the series, I will turn my attention to the setting of
$G$equivariant stable homotopy theory, where $G$ is an abelian $p$group.
Analogous to the classical case, we can use symmetric powers of the
equivariant sphere to filter $H\underline{\F}_p$, and the cofibers are
Steinberg summands of equivariant classifying spaces. We then study how
the cells of these spaces split after smashing with $H\underline{\F}_p$
in the case $G=C_p$. When $p=2$, the result is a decomposition of
$H\underline{\F}_2 \sm H\underline{\F}_2$ whose generators correspond to
\emph{representation spheres}, while at odd primes, we see something more unusual.
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UBC Math

Fri 3 Nov 2017, 3:00pm
Department Colloquium
ESB 2012

A Class of Polytopes with a Remarkable Volume Formula

ESB 2012
Fri 3 Nov 2017, 3:00pm4:00pm
Abstract
TBA
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UC Irvine

Mon 6 Nov 2017, 4:00pm
Algebraic Geometry Seminar
MATH 126

TBA

MATH 126
Mon 6 Nov 2017, 4:00pm5:00pm
Abstract
TBA
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UBC

Tue 7 Nov 2017, 3:30pm
Diff. Geom, Math. Phys., PDE Seminar
ESB 2012

Optimal Stopping with a Probabilistic Constraint

ESB 2012
Tue 7 Nov 2017, 3:30pm4:30pm
Abstract
Optimal stopping problems can be viewed as a problem to calculate
the space and time dependent value function, which solves a nonlinear, possibly
nonsmooth and degenerate, parabolic PDE known as an HamiltonJacobiBellman
(HJB) equation. These equations are well understood using the theory of
viscosity solutions, and the optimal stopping policy can be retrieved when
there is some regularity and nondegeneracy of solution.
The HJB equation is commonly derived from a dynamic programming principle
(DPP). After adding a probabilistic constraint, the optimal policies no longer
satisfy this DPP. Instead, we can reach the HJB equation by a method related
to optimal transportation, and recover a DPP for a Lagrangianrelaxation of
the problem. The resulting HJB equation remains coupled through the constraint
with the optimal policy (and another parabolic PDE). Solving the HJB and
recovery of the optimal stopping policy is aided by considering the
``piecewisemonotonic’' structure of the stopping set.
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UBC

Tue 7 Nov 2017, 4:00pm
Discrete Math Seminar
ESB 4127

TBD

ESB 4127
Tue 7 Nov 2017, 4:00pm5:00pm
Abstract
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University of California, Irvine

Wed 8 Nov 2017, 3:15pm
Topology and related seminars
ESB 4133 (PIMS Lounge)


ESB 4133 (PIMS Lounge)
Wed 8 Nov 2017, 3:15pm4:15pm
Abstract
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Emory University

Thu 9 Nov 2017, 3:30pm
Number Theory Seminar
Math 126

Polya’s Program for the Riemann Hypothesis and Related Problems

Math 126
Thu 9 Nov 2017, 3:30pm5:00pm
Abstract
In 1927 Polya proved that the Riemann Hypothesis is equivalent to the hyperbolicity of Jensen polynomials for Riemann's Xifunction. This hyperbolicity has only been proved for degrees d=1, 2, 3. We prove the hyperbolicity of 100\% of the Jensen polynomials of every degree. We obtain a general theorem which models such polynomials by Hermite polynomials.
This theorem also allows us to prove a conjecture of Chen, Jia, and Wang on the partition function. This is joint work with Michael Griffin, Larry Rolen, and Don Zagier.
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Oregon

Mon 13 Nov 2017, 4:00pm
Algebraic Geometry Seminar
MATH 126

TBA

MATH 126
Mon 13 Nov 2017, 4:00pm5:00pm
Abstract
TBA
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Wayne State University

Wed 15 Nov 2017, 3:15pm
Topology and related seminars
ESB 4133


ESB 4133
Wed 15 Nov 2017, 3:15pm4:15pm
Abstract
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Université de Montréal

Fri 17 Nov 2017, 11:00am
Number Theory Seminar
MATX1118 (tentative)

TBA

MATX1118 (tentative)
Fri 17 Nov 2017, 11:00am12:00pm
Abstract
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UBC

Fri 17 Nov 2017, 3:00pm
SPECIAL
ESB 2012

PIMSUBC Distinguished ColloquiumTBA (for PIMS UBC Math Sciences prize)

ESB 2012
Fri 17 Nov 2017, 3:00pm4:00pm
Details
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Idaho

Mon 20 Nov 2017, 4:00pm
Algebraic Geometry Seminar
MATH 126

TBA

MATH 126
Mon 20 Nov 2017, 4:00pm5:00pm
Abstract
TBA
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University of Chile

Tue 21 Nov 2017, 3:30pm
Diff. Geom, Math. Phys., PDE Seminar
ESB 2012

Asymptotic stability for some nonlinear KleinGordon equations for odd perturbations in the energy space

ESB 2012
Tue 21 Nov 2017, 3:30pm4:30pm
Abstract
Showing asymptotic stability in one dimensional nonlinear KleinGordon equations is a notoriously difficult problem. In this talk I will describe an approach based on virial estimates which allows to prove it in case when only odd perturbations are allowed. In particular I will discuss asymptotic stability of the kink in the $\phi^{^4}$ model.
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University of Southern California

Wed 22 Nov 2017, 3:15pm
Topology and related seminars
ESB 4133


ESB 4133
Wed 22 Nov 2017, 3:15pm4:15pm
Abstract
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Texas A&M

Thu 23 Nov 2017, 4:00pm
SPECIAL
Algebraic Geometry Seminar
MATX 1101

TBA

MATX 1101
Thu 23 Nov 2017, 4:00pm5:00pm
Abstract
TBA
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Université ParisSaclay

Wed 29 Nov 2017, 3:15pm
SPECIAL
Department Colloquium
ESB 2012

TBA

ESB 2012
Wed 29 Nov 2017, 3:15pm4:15am
Abstract
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Columbia

Wed 29 Nov 2017, 4:00pm
Algebraic Geometry Seminar
MATH 126

TBA

MATH 126
Wed 29 Nov 2017, 4:00pm5:00pm
Abstract
TBA
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Note for Attendees
Light refreshments will be served at 2:45pm in ESB 4133, the PIMS Lounge before this colloquium.