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Polygonal cycles in higher Chow groups of Jacobians

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The aim of this paper is to construct non-trivial cycles in the first higher Chow group of the Jacobian of a curve having special torsion points. The basic tool is to compute the analogue of the Griffiths' infinitesimal invariant of the natural normal function defined by the cycle as the curve moves in the corresponding moduli space. We prove also a Torelli-like theorem. The case of genus 2 is considered in the last section.

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Annali di Matematica Pura ed Applicata, 2004, vol. 183, num. 3, p. 387-399

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Articles publicats en revistes (Matemàtiques i Informàtica)

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Polygonal cycles in higher Chow groups of Jacobians