On Abel maps of stable curves

Lucia Caporaso; Eduardo Esteves

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On Abel maps of stable curves

Lucia Caporaso·Eduardo Esteves

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Abstract

We construct Abel maps for a stable curve $X$. Namely, for each one-parameter deformation of $X$ with regular total space, and every integer $d>0$, we construct by specialization a map $α^d_X$ from the smooth locus of $X^d$ to the moduli scheme of balanced line bundles on semistable curves over $X$. For $d=1$, we show that $α^1_X$ naturally extends over $X$, and does not depend on the choice of the deformation; we give a precise description of when it is injective.

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BibTeX RIS

Lucia Caporaso, Eduardo Esteves. 2006-03-20. On Abel maps of stable curves. https://arxiv.org/abs/math/0603476

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