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arxiv: 1805.05496 · v2 · pith:3Z7K5WLLnew · submitted 2018-05-15 · 🧮 math.AG · math.NT

Some results about zero-cycles on abelian and semi-abelian varieties

classification 🧮 math.AG math.NT
keywords abeliangroupresultssemi-abeliansomevarietyalbanesecertain
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In this short note we extend some results obtained in \cite{Gazaki2015}. First, we prove that for an abelian variety $A$ with good ordinary reduction over a finite extension of $\mathbb{Q}_p$ with $p$ an odd prime, the Albanese kernel of $A$ is the direct sum of its maximal divisible subgroup and a torsion group. Second, for a semi-abelian variety $G$ over a perfect field $k$, we construct a decreasing integral filtration $\{F^r\}_{r\geq 0}$ of Suslin's singular homology group, $H_0^{sing}(G)$, such that the successive quotients are isomorphic to a certain Somekawa K-group.

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