Mathematics – Algebraic Geometry
Scientific paper
1992-02-17
Mathematics
Algebraic Geometry
18 pages, Latex 2.09
Scientific paper
For a curve C, viewed as a cycle in its Jacobian, we study its image n_*C
under multiplication by n on JC. We prove that the subgroup generated by these
cycles, in the Chow group modulo algebraic equivalence, has rank at most d-1,
where d is the gonality of C. We also discuss some general facts on the action
of n_* on the Chow groups.
Colombo Elisabetta
Geemen Bert van
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