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arXiv · 1507.08558

The compactified jacobian can be nonreduced

Jesse Leo Kass
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Abstract

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.

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Jesse Leo Kass. 2015-07-30. The compactified jacobian can be nonreduced. https://doi.org/10.1112/blms%2Fbdv036

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