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arXiv · 1512.00926

Vertical Distribution Relations For Special Cycles on Unitary Shimura Varieties

Reda Boumasmoud·Ernest Hunter Brooks·Dimitar Jetchev
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Abstract

We consider cycles on a 3-dimensional Shimura varieties attached to a unitary group, defined over extensions of a CM field $E$, which appear in the context of the conjectures of Gan, Gross, and Prasad \cite{gan-gross-prasad}. We establish a vertical distribution relation for these cycles over an anticyclotomic extension of $E$, complementing the horizontal distribution relation of \cite{jetchev:unitary}, and use this to define a family of norm-compatible cycles over these fields, thus obtaining a universal norm construction similar to the Heegner $Λ$-module constructed from Heegner points.

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Reda Boumasmoud, Ernest Hunter Brooks, Dimitar Jetchev. 2016-04-11. Vertical Distribution Relations For Special Cycles on Unitary Shimura Varieties. https://arxiv.org/abs/1512.00926

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