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The Shafarevich conjecture for hypersurfaces in abelian varieties
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DOI：10.4007/annals.2025.202.3.1.png)
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Abstract
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Faltings proved that there are finitely many abelian varieties of genus g over a number field K, with good reduction outside a finite set of primes S. Fixing one of these abelian varieties A, we prove that there are finitely many smooth hypersurfaces in A, with good reduction outside S, representing a given ample class in the Neron-Severi group of A, up to translation, as long as the dimension of A is at least four. Our approach builds on the approach of Lawrence and Venkatesh, which studies p-adic variations of Hodge structure to turn finiteness results for p-adic Galois representations into geometric finiteness statements. A key new ingredient is an approach to proving big monodromy for the variations of Hodge structure arising from the middle cohomology of these hypersurfaces using the Tannakian theory of sheaf convolution on abelian varieties.
Keywords:
Shafarevich conjecture
p-adic Hodge theory
abelian varieties
sheaf convolution
monodromy
p-adic period maps
integral points
integral points
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5.3
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1.4K
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1.6W
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