On the determinant bundles of abelian schemes

Vincent Maillot; Damian Rössler

doi:10.1112/S0010437X07003235

On the determinant bundles of abelian schemes

Part of: Cycles and subschemes Abelian varieties and schemes

Published online by Cambridge University Press: 01 March 2008

Vincent Maillot and

Damian Rössler

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Vincent Maillot: Affiliation:
Institut de Mathématiques de Jussieu, Université Paris 7 Denis Diderot, C.N.R.S., Case Postale 7012, 2 place Jussieu, F-75251 Paris cedex 05, France (email: [email protected], [email protected])
Damian Rössler: Affiliation:
Institut de Mathématiques de Jussieu, Université Paris 7 Denis Diderot, C.N.R.S., Case Postale 7012, 2 place Jussieu, F-75251 Paris cedex 05, France (email: [email protected], [email protected])

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Abstract

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Abstract

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Let be an abelian scheme over a scheme S which is quasi-projective over an affine noetherian scheme and let be a symmetric, rigidified, relatively ample line bundle on . We show that there is an isomorphism of line bundles on S, where d is the rank of the (locally free) sheaf . We also show that the numbers 24 and 12d are sharp in the following sense: if N>1 is a common divisor of 12 and 24, then there are data as above such that