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math.AG2025

Bézout's theorem for abelian varieties

Olivier Debarre, Ben Moonen

Let , be closed irreducible subvarieties of an absolutely simple abelian variety of dimension over a field. If , we prove that the addition morp…

math.AG2025

Algebraic cycles on Gushel-Mukai varieties

Lie Fu, Ben Moonen

We study algebraic cycles on complex Gushel-Mukai (GM) varieties. We prove the generalised Hodge conjecture, the (motivated) Mumford-Tate conjecture, and the generalised Tate conje…

math.AG2024

The Tate Conjecture for even dimensional Gushel-Mukai varieties in characteristic

Lie Fu, Ben Moonen

We study Gushel-Mukai (GM) varieties of dimension 4 or 6 in characteristic . Our main result is the Tate conjecture for all such varieties over finitely generated fields of char…

math.AG2024

Integral aspects of Fourier duality for abelian varieties

Junaid Hasan, Hazem Hassan, Milton Lin +3

We prove several results about integral versions of Fourier duality for abelian schemes, making use of Pappas's work on integral Grothendieck-Riemann-Roch. If is smooth quasi-p…

math.AG2024

A remark on the paper of Deninger and Murre

Ben Moonen

We show that the results proven by Deninger and Murre directly imply that the Chern classes of the de Rham bundle of an abelian scheme are torsion elements in the Chow ring, a resu…

math.AG2024

A classification of Shimura curves in

Ben Moonen

We give a precise classification, in terms of Shimura data, of all 1-dimensional Shimura subvarieties of a moduli space of polarized abelian varieties.