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A question on splitting of metaplectic covers

Representation Theory 2014-06-17 v1

Abstract

Let E/FE/F be a quadratic extension of a non-Archimedian local field. Splitting of the 2-fold metaplectic cover of Sp2n(F){\rm Sp}_{2n}(F) when restricted to various subgroups of Sp2n(F){\rm Sp}_{2n}(F) plays an important role in application of the Weil representation of the metaplectic group. In this paper we prove the splitting of the metaplectic cover of GL2(E){\rm GL}_{2}(E) over the subgroups GL2(F){\rm GL}_{2}(F) and DF×D_{F}^{\times}, where DFD_{F} is the quaternion division algebra with center FF, as a first step in our study of the restriction of representations of metaplectic cover of GL2(E){\rm GL}_{2}(E) to GL2(F){\rm GL}_{2}(F) and DF×D_{F}^{\times}. These results were suggested to the author by Professor Dipendra Prasad.

Keywords

Cite

@article{arxiv.1406.3978,
  title  = {A question on splitting of metaplectic covers},
  author = {Shiv Prakash Patel},
  journal= {arXiv preprint arXiv:1406.3978},
  year   = {2014}
}

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9 pages