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Homological mirror symmetry for hypersurface cusp singularities

Published version
Peer-reviewed

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Article

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Abstract

We study versions of homological mirror symmetry for hypersurface cusp singularities and the three hypersurface simple elliptic singularities. We show that the Milnor fibres of each of these carries a distinguished Lefschetz fibration; its derived directed Fukaya category is equivalent to the derived category of coherent sheaves on a smooth rational surface Yp,q,r. By using localization techniques on both sides, we get an isomorphism between the derived wrapped Fukaya category of the Milnor fibre and the derived category of coherent sheaves on a quasi-projective surface given by deleting an anti-canonical divisor D from Yp,q,r. In the cusp case, the pair (Yp,q,r, D) is naturally associated to the dual cusp singularity, tying into Gross, Hacking and Keel’s proof of Looijenga’s conjecture.

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Keywords

4902 Mathematical Physics, 4904 Pure Mathematics, 49 Mathematical Sciences

Journal Title

Selecta Mathematica

Conference Name

Journal ISSN

1022-1824
1420-9020

Volume Title

Publisher

Springer
Sponsorship
Partially supported by NSF grant DMS-1505798 and by a Junior Fellow award from the Simons Foundation.