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Seminar

Number Theory Seminar: Epipelagic representations and rigid local systems September 10, 2014 (03:40 PM PDT - 04:40 PM PDT)
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Location: 740 Evans Hall
Speaker(s) Zhiwei Yun (Stanford University)
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Reeder and Yu have constructed certain supercuspidal representations of p-adic groups called “epipelagic representations," using invariant theory studied by Vinberg et al. In the function field case, we will realize these epipelagic representations as local components of automorphic representations, and construct the corresponding Langlands parameters, i.e., local systems over the projective line minus two points. These local systems can be computed explicitly for classical groups, and they give new families of local systems (with monodromy in all types of groups, classical or exceptional) that are expected to be rigid.

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