Abstract
We consider the class of singular double coverings \(X \rightarrow {\mathbb {P}}^3\) ramified in the degeneration locus \(D\) of a family of 2-dimensional quadrics. These are precisely the quartic double solids constructed by Artin and Mumford as examples of unirational but nonrational conic bundles. With such a quartic surface \(D,\) one can associate an Enriques surface \(S\) which is the factor of the blowup of \(D\) by a natural involution acting without fixed points (such Enriques surfaces are known as nodal Enriques surfaces or Reye congruences). We show that the nontrivial part of the derived category of coherent sheaves on this Enriques surface \(S\) is equivalent to the nontrivial part of the derived category of a minimal resolution of singularities of \(X\).
Similar content being viewed by others
References
Artin, M., Mumford, D.: Some elementary examples of unirational varieties which are not rational. Proc. Lond. Math. Soc. 3, 75–95 (1972)
Atiyah, M.: On analytic surfaces with double points. Proc. R. Soc. Lond. Ser. A 247, 237–244 (1958)
Beauville, A.: Complex algebraic surfaces, LMSST, 2nd edn. Cambridge University Press, Cambridge (1996)
Bondal, A.: Representations of associative algebras and coherent sheaves, (Russian) Izv. Akad. Nauk SSSR Ser. Mat. vol. 53, no. 1, 25–44 (1989); translation in Math. USSR-Izv. vol. 34, no. 1, pp. 23–42 (1990)
Bondal, A., Kapranov, M.: Representable functors, Serre functors, and reconstructions, (Russian) Izv. Akad. Nauk SSSR Ser. Mat. 53, no. 6, pp. 1183–1205, 1337 (1989); translation in Math. USSR-Izv. Vol. 35, no. 3, pp. 519–541 (1990)
Bondal, A., Orlov, D.: Semiorthogonal decomposition for algebraic varieties, preprint math.AG/9506012
Bondal, A., Orlov, D.: Reconstruction of a variety from the derived category and groups of autoequivalences. Compos. Math. 125(3), 327–344 (2001)
Cossec, F.: Reye congruences. Trans. AMS 280(2), 737–751 (1983)
Cossec, F., Dolgachev, I.: Enriques Surfaces I, Progress in Mathematics, 76. Birkhäuser Boston, Inc., Boston (1989)
Dolgachev, I., Reider, I.: On rank 2 vector bundles with \(c_1^2=10\) and \(c_2=3\) on Enriques surfaces, Algebraic Geometry (Chicago, IL, 1989) 39–49, Lectures Notes in Math. 1479, Springer, Berlin (1991)
Fulton, W., Harris, J.: Representation Theory: A First Course, vol. 129. Springer, Berlin (1991)
Kuznetsov, A.: Derived categories of quadric fibrations and intersections of quadrics. Adv. Math. 218(5), 1340–1369 (2008)
Kuznetsov, A.: Calabi-Yau categories, unpublished
Kuznetsov, A.: Scheme of lines on a family of quadrics: geometry and derived category. Math. Zeitschrift 276(3), 655–672 (2014)
Moishezon, B.: Algebraic varieties and compact complex spaces. In: Proceedings International Congress Mathematicians (Nice, 1970) 2, Gauthier-Villars, pp. 643–648
Orlov, D.: Projective bundles, monoidal transformations, and derived categories of coherent sheaves, (Russian) Izv. Ross. Akad. Nauk Ser. Mat. 56(4) 852–862 (1992); translation in. Russian Acad. Sci. Izv. Math. 41(1), pp. 133–141 (1993)
Zube, S.: Exceptional vector bundles on Enriques surfaces. Math. Notes 61(6), 693–699 (1997)
Acknowledgments
The first author would like to thank A. Bondal for helpful discussions. The second author would like to thank L. Katzarkov and D. Orlov for helpful discussions and is very grateful to I. Dolgachev for sharing many interesting facts about Enriques surfaces. We would also like to thank the referee for many helpful comments on an earlier version of this paper.
Author information
Authors and Affiliations
Corresponding author
Additional information
C.I. was partially supported by a NSERC Discovery Grant.
A.K. was partially supported by RFFI grant NSh-2998.2014.1 and by AG Laboratory SU-HSE, RF government grant, ag.11.G34.31.0023.
Rights and permissions
About this article
Cite this article
Ingalls, C., Kuznetsov, A. On nodal Enriques surfaces and quartic double solids. Math. Ann. 361, 107–133 (2015). https://doi.org/10.1007/s00208-014-1066-y
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00208-014-1066-y