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Upcoming Events › Algebra and Combinatorics Seminar

September 2017

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

September 25 | 3:00 pm - 4:00 pm EDT

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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October 2017

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

October 2 | 3:00 pm - 4:00 pm EDT

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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