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ON THE RESIDUE OF EISENSTEIN CLASSES OF SIEGEL VARIETIES

Published online by Cambridge University Press:  30 October 2017

FRANCESCO LEMMA*
Affiliation:
Institut mathématique de Jussieu-Paris Rive Gauche, UMR 7586, Bâtiment Sophie Germain, Case 7012, 75205 Paris Cedex 13, France e-mail: [email protected]
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Abstract

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Eisenstein classes of Siegel varieties are motivic cohomology classes defined as pull-backs by torsion sections of the polylogarithm prosheaf on the universal abelian scheme. By reduction to the Hilbert–Blumenthal case, we prove that the Betti realization of these classes on Siegel varieties of arbitrary genus have non-trivial residue on zero-dimensional strata of the Baily–Borel–Satake compactification. A direct corollary is the non-vanishing of a higher regulator map.

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 2017 

References

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