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ALMOST CLOSED 1-FORMS
Published online by Cambridge University Press: 13 August 2013
Abstract
We construct an algebraic almost closed 1-form with zero scheme not expressible (even locally) as the critical locus of a holomorphic function on a non-singular variety. The result answers a question of Behrend–Fantechi. We correct here an error in our paper (D. Maulik, R Pandharipande and R. P. Thomas, Curves on K3 surfaces and modular forms, J. Topol.3 (2010) 937–996. arXiv:1001.2719v3), where an incorrect construction with the same claimed properties was proposed.
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- Copyright © Glasgow Mathematical Journal Trust 2013
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