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arXiv:1507.08558 [math.AG]AbstractReferencesReviewsResources

The compactified jacobian can be nonreduced

Jesse Leo Kass

Published 2015-07-30Version 1

We prove by explicit example that the compactified jacobian can be nonreduced. The example is a rational space curve of arithmetic genus 4. This answers a question posed by Cyril D'Souza in 1979.

Comments: Final version
Journal: Bull. London Math. Soc. (2015) 47 (4): 686-692
Categories: math.AG
Subjects: 14H40, 14C05
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