Abstract
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.
Citation
Jörg Wildeshaus. "On the intersection motive of certain Shimura varieties: the case of Siegel threefolds." Ann. K-Theory 4 (4) 525 - 559, 2019. https://doi.org/10.2140/akt.2019.4.525
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