Home Mathematics Special cycles on unitary Shimura varieties II: Global theory
Article
Licensed
Unlicensed Requires Authentication

Special cycles on unitary Shimura varieties II: Global theory

  • Stephen Kudla EMAIL logo and Michael Rapoport
Published/Copyright: March 15, 2013

Abstract

We introduce moduli spaces of abelian varieties which are arithmetic models of Shimura varieties attached to unitary groups of signature (n-1,1). We define arithmetic cycles on these models and study their intersection behavior. In particular, in the non-degenerate case, we prove a relation between their intersection numbers and Fourier coefficients of the derivative at s = 0 of a certain incoherent Eisenstein series for the group U(n,n). This is done by relating the arithmetic cycles to their formal counterpart from part I [Invent. Math. 184 (2011), 629–682] via non-archimedean uniformization, and by relating the Fourier coefficients to the derivatives of representation densities of hermitian forms. The result then follows from the main theorem of part I and a counting argument.

Funding source: NSERC Discovery Grant

We thank U. Terstiege for helpful discussions. This project was started at the Hirschberg conference in 1996 organized by J. Rohlfs and J. Schwermer. We also gratefully acknowledge the hospitality of the Erwin-Schrödinger-Institut, where part of this work was done, and the support of the Hausdorff Center of Mathematics in Bonn. The first author's research was partially supported by an NSERC Discovery Grant. Finally, we thank the referee for a thorough reading of the manuscript and for many helpful suggestions concerning both content and exposition.

Received: 2012-3-5
Revised: 2012-11-5
Published Online: 2013-3-15
Published in Print: 2014-12-1

© 2014 by De Gruyter

Downloaded on 3.3.2026 from https://www.degruyterbrill.com/document/doi/10.1515/crelle-2012-0121/html
Scroll to top button