BEGIN:VCALENDAR VERSION:2.0 PRODID:-//University of Utah Math Department//Departmental Colloquium//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Departmental Colloquium - Fall 2015 X-WR-CALDESC:Departmental Colloquium at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20150917T160000-steven-sam@math.utah.edu DTSTART;TZID=America/Denver:20150917T160000 DTEND;TZID=America/Denver:20150917T170000 DTSTAMP:20260828T105759Z SUMMARY:Noetherianity properties in representation theory DESCRIPTION:Speaker: Steven Sam\, University of Wisconsin Madison\n\nI will survey some work on using noetherian properties of algebraic structures to prove stability results for functions and vector spaces coming from combinatorial representation theory and classical algebraic geometry. Some examples include Kronecker coefficients from the representation theory of … LOCATION:LCB 219 URL:http://math.utah.edu/research/colloquia/test/2015-fall/ END:VEVENT BEGIN:VEVENT UID:20150924T160000-jon-carlson@math.utah.edu DTSTART;TZID=America/Denver:20150924T160000 DTEND;TZID=America/Denver:20150924T170000 DTSTAMP:20260828T105759Z SUMMARY:Modules of constant Jordan type DESCRIPTION:Speaker: Jon Carlson\, University of Georgia\n\nIn this talk I will give an overview of work with Eric Friedlander, Julia Pevtsova and Andrei Suslin on module of constant Jordan type. Given a nilpotent linear operator on a vector space, the Jordan type is the partition of the dimension that describes the Jordan canonical form of the operator. … LOCATION:LCB 219 URL:http://math.utah.edu/research/colloquia/test/2015-fall/ END:VEVENT BEGIN:VEVENT UID:20151029T160000-dejan-slepcev@math.utah.edu DTSTART;TZID=America/Denver:20151029T160000 DTEND;TZID=America/Denver:20151029T170000 DTSTAMP:20260828T105759Z SUMMARY:Variational problems on graphs and their continuum limits DESCRIPTION:Speaker: Dejan Slepcev\, Carnegie Mellon University\n\nWe discuss variational problems arising in machine learning and their limits as the number of data points goes to infinity. Consider point clouds obtained as random samples of an underlying "ground-truth" measure. Graph representing the point cloud is obtained by assigning weights to edges based on … LOCATION:LCB 219 URL:http://math.utah.edu/research/colloquia/test/2015-fall/ END:VEVENT BEGIN:VEVENT UID:20151105T160000-rachel-ward@math.utah.edu DTSTART;TZID=America/Denver:20151105T160000 DTEND;TZID=America/Denver:20151105T170000 DTSTAMP:20260828T105759Z SUMMARY:Importance sampling in large-scale machine learning problems: why it works and how it can help DESCRIPTION:Speaker: Rachel Ward\, University of Texas at Austin\n\nA recent trend in signal processing and machine learning research is that exact reconstruction is achievable from highly subsampled data by passing to nonlinear, sparsity-inducing, reconstruction methods such as l1 minimization. Such guarantees often require strong structural conditions on the data … LOCATION:LCB 219 URL:http://math.utah.edu/research/colloquia/test/2015-fall/ END:VEVENT BEGIN:VEVENT UID:20151119T160000-ping-sheng@math.utah.edu DTSTART;TZID=America/Denver:20151119T160000 DTEND;TZID=America/Denver:20151119T170000 DTSTAMP:20260828T105759Z SUMMARY:Hybrid resonances and the perfect absorption of low frequency sound DESCRIPTION:Speaker: Ping Sheng\, HKUST\n\nAn impedance-match surface has the property that an incident wave generates no reflection. Here we demonstrate that by using simple construct, an acoustically reflecting surface can acquire hybrid resonances and becomes impedance-matched to airborne sound at tunable frequencies, so that no … LOCATION:LCB 219 URL:http://math.utah.edu/research/colloquia/test/2015-fall/ END:VEVENT END:VCALENDAR