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arXiv · 1706.02743

On the intersection motive of certain Shimura varieties: the case of Siegel threefolds

J. Wildeshaus
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Abstract

In this article, we construct a Hecke-equivariant Chow motive whose realizations equal intersection cohomology of Siegel threefolds with regular algebraic coefficients. As a consequence, we are able to define Grothendieck motives for Siegel modular forms.

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J. Wildeshaus. 2019-04-17. On the intersection motive of certain Shimura varieties: the case of Siegel threefolds. https://doi.org/10.2140/akt.2019.4.525

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