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The p-rank stratification on the Siegel moduli space with Iwahori level structure (1109.5061v4)
Published 23 Sep 2011 in math.AG
Abstract: Our concern in this paper is to describe the p-rank statification on the Siegel moduli space with Iwahori level structure over fields of positive characteristic. We calculate the dimension of the strata and describe the closure of a given stratum in terms of p-rank strata. We also examine the relationship between the p-rank stratification and the Kottwitz-Rapoport stratification.
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