[grads] [Sem-coll] Applied Math Colloquium and Seminars this week

Robert Ellis ulamgamer at gmail.com
Mon Nov 2 11:24:44 CST 2009


Michael Pelsmajer's talk, scheduled for 12:50pm today, is postponed until
Monday, Nov. 9th (same time and place).

Thank you,
Robert Ellis

On Mon, Nov 2, 2009 at 11:57 AM, Joe Millham <jmillhamiit at gmail.com> wrote:

> Please join the Applied Math Department for the following Colloquium
> and Seminars.  All are encouraged to attend, and refreshments will be
> available at some events.  For a complete listing of this semester's
> colloquia and seminars, please visit the listing website:
> http://www.iit.edu/csl/am/colloquia/
>
> Department Colloquium
> Monday, Nov. 2  4:40 pm  E1 106
> Marian Gidea, Northwestern Illinois University
> "How to Change the Inclination of a Libration-Point Satellite"
> see abstract below
> +++++++++++++++++++++++++++++++++++++
>
> DAM / Networks and Optimization Seminars
> Monday, Nov. 2, 12:50 pm E1 119
> Michael Pelsmajer, IIT - Applied Math
> "Two Treewidth Problems"
> see abstract below
> +++++++++++++++++++++++++++++++++++++
>
> Meshfree Methods Seminar
> Wednesday, Nov. 4,  12:45 pm   E1 106
> Ben Niu,  IIT- Applied Math
> "Multi-Level Monte Carlo Algorithms for Infinite-Dimensional
> Integration: A Random Setting"
> see abstract below
> +++++++++++++++++++++++++++++++++++++
> ============================================
> ============================================
> +++++++++++++++++++++++++++++++++++++
>
> Department Colloquium
> Monday, Nov. 2  4:40 pm  E1 106
> Marian Gidea, Northwestern Illinois University
> "How to Change the Inclination of a Libration-Point Satellite"
>
> We consider the spatial circular restricted three-body problem. We
> parametrize the center manifold near one of the libration points by
> action-angle coordinates. We use the method of correctly aligned
> windows to show numerically the existence of orbits that exhibit a
> substantial change in their action coordinate. As an application, one
> can design fuel-efficient maneuvers that change a nearly-horizontal
> orbit of a spacecraft parked near a libration point into a
> nearly-vertical orbit.
> +++++++++++++++++++++++++++++++++++++
>
> DAM / Networks and Optimization Seminars
> Monday, Nov. 2, 12:50 pm E1 119
> Michael Pelsmajer, IIT - Applied Math
> "Two Treewidth Problems"
> Treewidth is, in a way, a measure of how closely a graph resembles a
> tree.  It is important for both applied and theoretical reasons (e.g.,
> dynamic programming, fixed-parameter tractability, graph minors
> project).
>
> In this talk we introduce treewidth and describe two research
> questions that should be accessible to students.  One concerns a graph
> coloring variant called "equitable list coloring", and the other
> generalizes independent sets and induced matchings.
> +++++++++++++++++++++++++++++++++++++
>
> Meshfree Methods Seminar
> Wednesday, Nov. 4,  12:45 pm   E1 106
> Ben Niu,  IIT- Applied Math
> "Multi-Level Monte Carlo Algorithms for Infinite-Dimensional
> Integration: A Random Setting"
> We study randomized algorithms for numerical integration with respect
> to a product probability measure on the sequence space $\R^\N$. We
> consider integrands from reproducing kernel Hilbert spaces, whose
> kernels are superpositions of weighted tensor products. We combine
> tractability results for finite-dimensional integration with the
> multi-level technique to construct new algorithms for
> infinite-dimensional integration. These algorithms use variable
> subspace sampling, and we compare the power of variable and fixed
> subspace sampling by an analysis of minimal errors.
>
>
> See you there!
>
> Joe Millham
> Administrative Assistant
> Department of Applied Mathematics
> Illinois Institute of Technology
> Engineering-1 Room 208
> 10 W. 32rd St.
> Chicago IL 60616
> 312.567.8984 (Phone)
> 312.567.3135 (Fax)
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-- 
E1 105C, IL Inst. Tech.
Chicago, IL 60616
(312) 567-5336 --- rellis at math.iit.edu
http://math.iit.edu/~rellis/
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