BEGIN:VCALENDAR VERSION:2.0 PRODID:-//University of Utah Math Department//Departmental Colloquium//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Departmental Colloquium - Spring 2007 X-WR-CALDESC:Departmental Colloquium at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20070115T160000-coralia-cartis@math.utah.edu DTSTART;TZID=America/Denver:20070115T160000 DTEND;TZID=America/Denver:20070115T170000 DTSTAMP:20260821T120902Z SUMMARY:Adaptive regularization methods for nonlinear optimization DESCRIPTION:Speaker: Coralia Cartis\, University of Edinburgh\n\nNonlinear optimization problems represent the bed-rock of numerous real-life applications, such as data assimilation for weather prediction, radiation therapy treatment planning, optimal design of energy transmission networks, and many more. The solution of these problems usually involves … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070125T160000-dan-ciubotaru@math.utah.edu DTSTART;TZID=America/Denver:20070125T160000 DTEND;TZID=America/Denver:20070125T170000 DTSTAMP:20260821T120902Z SUMMARY:Spherical unitary representations. DESCRIPTION:Speaker: Dan Ciubotaru\, MIT\n\nA classical problem in representation theory, motivated by abstract harmonic analysis and number theory, is the study of unitary representations of reductive algebraic groups (for example the general linear, symplectic, or orthogonal groups) defined over real and p -adic fields. A unitary … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070201T160000-kevin-wortman@math.utah.edu DTSTART;TZID=America/Denver:20070201T160000 DTEND;TZID=America/Denver:20070201T170000 DTSTAMP:20260821T120902Z SUMMARY:Large-scale geometry of lattices in semisimple groups DESCRIPTION:Speaker: Kevin Wortman\, Yale University\n\nI'll talk about comparisons that can be made in geometric group theory between classical arithmetic groups such as SL(n,Z) and arithmetic groups over function fields such as SL(n,F[t]) where F is a finite field. I'll also try to explain how sometimes these classes of groups exhibit their similar … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070208T160000-doron-levy@math.utah.edu DTSTART;TZID=America/Denver:20070208T160000 DTEND;TZID=America/Denver:20070208T170000 DTSTAMP:20260821T120902Z SUMMARY:Group Dynamics of Phototaxis: Interacting Stochastic Many-Particle Systems and their Continuum Limit. DESCRIPTION:Speaker: Doron Levy\, Stanford University\n\nMicrobes live in fluctuating environments that are often limiting for growth. They have evolved several sophisticated mechanisms to sense changes in important environmental parameters such as light and nutrients. Most bacteria also have complex appendages that allow them to move, so they can swim or … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070315T160000-oscar-bruno@math.utah.edu DTSTART;TZID=America/Denver:20070315T160000 DTEND;TZID=America/Denver:20070315T170000 DTSTAMP:20260821T120902Z SUMMARY:Computational electromagnetics and acoustics: high-order solvers, high-frequency configurations, high-order surface representations. DESCRIPTION:Speaker: Oscar Bruno\, California Institute of Technology\n\nI will consider algorithms and methodologies for the numerical solution of problems of scattering by complex bodies in three-dimensional space, and I will focus on a newly developed class of high-order algorithms for these problems. These methods, which are based on integral equations, high-order … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070329T160000-jack-xin@math.utah.edu DTSTART;TZID=America/Denver:20070329T160000 DTEND;TZID=America/Denver:20070329T170000 DTSTAMP:20260821T120902Z SUMMARY:Auditory Transforms and Applications. DESCRIPTION:Speaker: Jack Xin\, University of California, Irvine\n\nAuditory pathway from sound to perception is a multi-level information processing system. It is modeled as a transform with uniform and fine frequency resolution at low frequencies, yet nonuniform and coarse frequency resolution towards higher frequencies. Such transforms are built with discrete … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070405T160000-rahul-pandharipande@math.utah.edu DTSTART;TZID=America/Denver:20070405T160000 DTEND;TZID=America/Denver:20070405T170000 DTSTAMP:20260821T120902Z SUMMARY:Algebraic Cobordism DESCRIPTION:Speaker: Rahul Pandharipande\, Princeton University\n\nI will give an introductory talk about a theory of cobordism for algebraic varieties defined by M. Levine and F. Morel from Quillen's axiomatic perspective. My point of view will be rather concrete with the goal of explaining a new geometric presentation of algebraic cobordism via the simplest … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070412T160000-pete-casazza@math.utah.edu DTSTART;TZID=America/Denver:20070412T160000 DTEND;TZID=America/Denver:20070412T170000 DTSTAMP:20260821T120902Z SUMMARY:The Kadison-Singer Problem in Mathematics and Engineering DESCRIPTION:Speaker: Pete Casazza\, University of Missouri-Columbia\n\nWe will see that the 1959 Kadison-Singer Problem in C *-algebras is equivalent to fundamental unsolved problems in a dozen areas of research in pure mathematics, applied mathematics and engineering. This gives all these research areas common ground on which to interact as well as explaining why each … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT BEGIN:VEVENT UID:20070417T160000-bill-casselman@math.utah.edu DTSTART;TZID=America/Denver:20070417T160000 DTEND;TZID=America/Denver:20070417T170000 DTSTAMP:20260821T120902Z SUMMARY:An illustrated history of written numbers DESCRIPTION:Speaker: Bill Casselman\, University of British Columbia\n\nThis talk will present some snapshots from the history of numerals, mostly photographs of various systems, dating from Sumer (3400 B.C.) to the early Renaissance. LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2007-spring/ END:VEVENT END:VCALENDAR