On the boundary cohomology of locally symmetric varieties. -- Appendix A: No ghosts for \(Sp_4\). -- Appendix B: The Cayley transform (semi-simple or non-arithmetic version). -- Appendix C: Equal-rank groups

zbMath0952.14035MaRDI QIDQ1808887

Steven Zucker

Publication date: 1 March 2000

Published in: Vietnam Journal of Mathematics (Search for Journal in Brave)

zbMATH Keywords

Shimura varietiestoroidal compactificationsBorel-Serre compactificationlocally symmetric varietyBaily-Borel Satake compactification

Mathematics Subject Classification ID

Homogeneous spaces and generalizations (14M17) Toric varieties, Newton polyhedra, Okounkov bodies (14M25) Étale and other Grothendieck topologies and (co)homologies (14F20) Compactification of analytic spaces (32J05)

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Ghost classes in the cohomology of the Shimura variety associated to $GSp_4$ ⋮ Denominators of Eisenstein cohomology classes for \(\text{GL}_2\) over imaginary quadratic fields

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