Skip to main content
Log in

An affine open covering of \({\mathcal{M}_g}\) for g ≤ 5

  • Original Paper
  • Published:
Geometriae Dedicata Aims and scope Submit manuscript

Abstract

We prove that the moduli space \({\mathcal{M}_g}\) of smooth curves of genus g is the union of g−1 affine open subsets for every g with 2 ≤ g ≤ 5, as predicted by an intriguing conjecture of Eduard Looijenga.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Accola R.D.: Some loci of Teichmüller space for genus five defined by vanishing theta nulls. Contributions to analysis (a collection of papers dedicated to Lipman Bers), pp. 11–18. Academic Press, New York (1974)

    Google Scholar 

  2. Arbarello E., Cornalba M.: Calculating cohomology groups of moduli spaces of curves via algebraic geometry. Inst. Hautes Études Sci. Publ. Math. 88, 97–127 (1998)

    Article  MathSciNet  MATH  Google Scholar 

  3. Arbarello, E., Cornalba, M.: Divisors in the moduli space of curves. Pre-print arXiv:0810.5373, to appear in Surveys in Differ. Geom.

  4. Cornalba, M., Harris, J.: Divisor classes associated to families of stable varieties, with applications to the moduli space of curves. Ann. Sc. Ec. Norm. Sup., 4 s., t. 21:455–475 (1988)

    Google Scholar 

  5. Debarre O.: Le lieu des variétés abéliennes dont le diviseur thêta est singulier a deux composantes. Ann. Sc. Ec. Norm. Sup. 25, 687–708 (1992)

    MathSciNet  MATH  Google Scholar 

  6. Faber, C., Looijenga, E.: Remarks on moduli of curves. Moduli of curves and abelian varieties. Aspects Math., E33, Vieweg , pp. 23–45 (1999)

  7. Fontanari C., Looijenga E.: A perfect stratification of \({\mathcal{M}_g}\) for g ≤ 5. Geom. Dedicata 136, 133–143 (2008)

    Article  MathSciNet  MATH  Google Scholar 

  8. Grushevsky, S., Salvati Manni, R.: The superstring cosmological constant and the Schottky form in genus 5. arXiv:0809.1391 (2008)

  9. Hain, R., Looijenga, E.: Mapping class groups and moduli spaces of curves. In: Proceedings of Symposia in Pure Mathematics, AMS, vol. 62, pp. 97–142 (1998)

  10. Harer J.: The virtual cohomological dimension of the mapping class group of an orientable surface. Inv. Math. 84, 157–176 (1986)

    Article  MathSciNet  MATH  Google Scholar 

  11. Igusa J.: On the graded ring of theta constants. Am. J. Math. 89, 817–855 (1967)

    Article  MathSciNet  MATH  Google Scholar 

  12. Igusa J.: On the irreducibility of Schottky’s divisor. J. Fac. Sci. Tokyo 28, 531–545 (1981)

    MathSciNet  MATH  Google Scholar 

  13. Mumford, D.: Tata Lectures on Theta II. Progress in Mathematics, vol. 43. Birkhäuser, Boston/Basel/Stuttgart (1984)

  14. Salvati Manni R.: Slope of cusp forms and theta series. J. Number Theory 83, 282–296 (2000)

    Article  MathSciNet  MATH  Google Scholar 

  15. Tsuyumine S.: Thetanullwerte on a moduli space of curves and hyperelliptic loci. Math. Z. 207, 539–568 (1991)

    Article  MathSciNet  MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Claudio Fontanari.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fontanari, C., Pascolutti, S. An affine open covering of \({\mathcal{M}_g}\) for g ≤ 5. Geom Dedicata 158, 61–68 (2012). https://doi.org/10.1007/s10711-011-9620-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10711-011-9620-1

Keywords

Mathematics Subject Classification (2000)

Navigation