September 2017

## Heekyoung Hahn, Duke University, Langlands’ beyond endoscopy proposal and related questions on algebraic groups and combinatorics

Langlands' beyond endoscopy proposal for establishing functoriality motivates the study of irreducible subgroups of $\mathrm{GL}_n$ that stabilize a line in a given representation of $\mathrm{GL}_n$. Such subgroups are said to be detected by the representation. In this talk we present…

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## Sung Ha Kang, Georgia Tech, Variational image processing and computational challenges

Starting with an introduction to variational/PDE based image processing, this talk will focus on new developments of fast algorithms for higher order variational imaging models.  For example, recent developments of fast algorithms, based on operator splitting, augmented Lagrangian, and alternating…

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## Chris Tralie, Duke University, From Musical Rhythms To Vibrating Vocal Folds: Geometric (Quasi)Periodicity Quantification in Multimedia Time Series

A large variety of multimedia data inference problems require analysis of repeated structures.  In audio, for instance, the rhythm, or pulse'' of the music, occurs in a periodic pattern, and understanding this pattern is an important preprocessing step in music…

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## Website Management with WordPress

Effective webpages are an increasingly important medium for disseminating information related to classes and research. For TAs, they provide a critical way to share material with your class whereas for those entering the job market, they are often checked by…

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October 2017

## Joshua Hallam, Wake Forest University, Whitney duals of graded partially ordered sets

To each graded poset one can associate two sequences of numbers; the Whitney numbers of the first kind and the Whitney numbers of the second kind. One sequence keeps track of the Möbius function at each rank level and other…

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November 2017

## Ryan Murray, Convergence rates for ficticious play algorithm in decentralized control problems

In many practical control problems (e.g. in the power grid/traffic flow) agents are not able to effectively coordinate their actions. One classical method proposed by economists for solving such decentralized control problems is known as the ficticious play algorithm. This…

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