Abstract
Extending the description of canonical rings from Reid (J Fac Sci Univ Tokyo Sect IA Math 25(1):75–92, 1978) we show that every Gorenstein stable Godeaux surface with torsion of order at least 3 is smoothable.
Similar content being viewed by others
References
Arbarello, E., Cornalba, M., Griffiths, P.A., Harris, J.: Geometry of algebraic curves, vol. I. In: Grundlehren der Mathematischen Wissenschaften [Fundamental Principles of Mathematical Sciences], vol. 267. Springer, New York (1985)
Alexeev, V.: Higher-dimensional analogues of stable curves. In: International Congress of Mathematicians, vol. II, pp. 515–536. European Mathematical Society, Zürich (2006)
Barlow, R.: Some new surfaces with \(p_g=0\). Duke Math. J. 51(4), 889–904 (1984)
Barlow, R.: A simply connected surface of general type with \(p_g=0\). Invent. Math. 79(2), 293–301 (1985)
Catanese, F., Debarre, O.: Surfaces with \(K^2=2,\; p_g=1,\; q=0\). J. Reine Angew. Math. 395, 1–55 (1989)
Catanese, F., Franciosi, M., Hulek, K., Reid, M.: Embeddings of curves and surfaces. Nagoya Math. J. 154, 185–220 (1999)
Coughlan, S.: Extending hyperelliptic K3 surfaces, and Godeaux surfaces with torsion \({\mathbb{Z}}/2\). J. Korean Math. Soc. (to appear)
Coughlan, S., Urzúa, G.: On \( {\mathbb{Z}}/3\)-Godeaux surfaces (2016). arXiv:1609.02177
Catanese, F., Pignatelli, R.: On simply connected Godeaux surfaces. In: Complex Analysis and Algebraic Geometry, pp. 117–153. de Gruyter, Berlin (2000)
Dolgachev, I., Werner, C.: A simply connected numerical Godeaux surface with ample canonical class. J. Algebraic Geom. 8(4), 737–764 (1999)
Dolgachev, I., Werner, C.: Erratum to: “A simply connected numerical Godeaux surface with ample canonical class” [J. Algebraic Geom. 8 (1999), no. 4, 737–764; MR1703612 (2000h:14030)]. J. Algebraic Geom. 10(2), 397 (2001)
Franciosi, M., Pardini, R., Rollenske, S.: Computing invariants of semi-log-canonical surfaces. Math. Z. 280(3–4), 1107–1123 (2015)
Franciosi, M., Pardini, R., Rollenske, S.: Gorenstein stable Godeaux surfaces (2016). arXiv:1611.07184
Franciosi, M.: On the canonical ring of curves and surfaces. Manuscr. Math. 140(3–4), 573–596 (2013)
Franciosi, M., Tenni, E.: The canonical ring of a 3-connected curve. Rend. Lincei Mat. Appl. 25 (2014)
Inoue, M.: Some new surfaces of general type. Tokyo J. Math. 17(2), 295–319 (1994)
Kollár, J.: Moduli of varieties of general type. In: Farkas, G., Morrison, I. (eds.) Handbook of Moduli: Volume II. Advanced Lectures in Mathematics, vol. 24, pp. 131–158. International Press (2012). arXiv:1008.0621
Kollár, J.: Singularities of the minimal model program. In: Cambridge Tracts in Mathematics, vol. 200. Cambridge University Press, Cambridge (2013) (With a collaboration of Sándor Kovács)
Kollár, J.: Moduli of varieties of general type (2016) (book in preparation)
Kollár, J., Shepherd-Barron, N.: Threefolds and deformations of surface singularities. Invent. Math. 91(2), 299–338 (1988)
Liu, W., Rollenske, S.: Pluricanonical maps of stable log surfaces. Adv. Math. 258, 69–126 (2014)
Liu, W., Rollenske, S.: Geography of Gorenstein stable log surfaces. Trans. Am. Math. Soc. 368(4), 2563–2588 (2016)
Rana, J., Tevelev, J., Urzúa, G.: The Craighero–Gattazzo surface is simply-connected (2015). arXiv:1506.03529
Reid M.: Surfaces with \(p_{g}=0\), \(K^{2}=1\). J. Fac. Sci. Univ. Tokyo Sect. IA Math. 25(1), 75–92 (1978)
Reid, M.: Gorenstein in codimension 4: the general structure theory. In: Algebraic Geometry in East Asia-Taipei 2011. Advanced Studies in Pure Mathematics, vol. 65, pp. 201–227. The Mathematical Society of Japan, Tokyo (2015)
Rollenske, S.: A new irreducible component of the moduli space of stable Godeaux surfaces. Manuscr. Math. 149(1–2), 117–130 (2016)
Werner, C.: A surface of general type with \(p_g=q=0\), \(K^2=1\). Manuscr. Math. 84(3–4), 327–341 (1994)
Acknowledgements
The results in this paper are part of our exploration of Gorenstein stable surfaces with \(K_X^2 = 1\) carried out jointly with Rita Pardini. We would like to thank her for this enjoyable collaboration. S. Rollenske enjoyed several discussions with Stephen Coughlan and Roberto Pignatelli about canonical rings in general and Godeaux surfaces in particular. We also would like to thank Giancarlo Urzúa for comments. M. Franciosi is grateful for support by the PRIN project 2010S47ARA\(\_\)011 “Geometria delle Varietà Algebriche” of italian MIUR. S. Rollenske is grateful for support by the DFG via the Emmy Noether programme and partially SFB 701.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Franciosi, M., Rollenske, S. Canonical rings of Gorenstein stable Godeaux surfaces. Boll Unione Mat Ital 11, 75–91 (2018). https://doi.org/10.1007/s40574-016-0114-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40574-016-0114-9