The cycle class of the supersingular locus of principally polarized abelian varieties

Open Access
Authors
Publication date 11-2025
Journal Selecta Mathematica, New Series
Article number 95
Volume | Issue number 31 | 5
Number of pages 40
Organisations
  • Faculty of Science (FNWI) - Korteweg-de Vries Institute for Mathematics (KdVI)
Abstract We prove a formula for the cycle class of the supersingular locus in the Chow ring with rational coefficients of the moduli space of principally polarized abelian varieties of dimension g in characteristic p. This formula determines this class as a monomial in the Chern classes of the Hodge bundle up to a factor that is a polynomial in p. This factor is known for ≤ 3. We also determine the factor for  g = 4.
Document type Article
Note Publisher Copyright: © The Author(s) 2025.
Language English
Published at https://doi.org/10.1007/s00029-025-01095-w
Other links https://www.scopus.com/pages/publications/105018721981
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