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arxiv: 1811.02040 · v1 · pith:JUS2G55Dnew · submitted 2018-11-05 · 🧮 math.NT · math.AG

The GL₄ Rapoport-Zink Space

classification 🧮 math.NT math.AG
keywords componentsmathrmdescriptiongiveirreduciblerapoport-zinkspaceapplication
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We give a description of the $\mathrm{GL}_4$ Rapoport-Zink space, including the connected components, irreducible components, intersection behavior of the irreducible components, and Ekedahl-Oort stratification. As an application of this, we also give a description of the supersingular locus of the Shimura variety for the group $\mathrm{GU}(2,2)$ over a prime split in the relevant imaginary quadratic field.

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