On quasismooth weighted complete intersections
Authors:
Jheng-Jie Chen, Jungkai A. Chen and Meng Chen
Journal:
J. Algebraic Geom. 20 (2011), 239-262
DOI:
https://doi.org/10.1090/S1056-3911-10-00542-4
Published electronically:
May 12, 2010
MathSciNet review:
2762991
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Abstract |
References |
Additional Information
Abstract: We prove two conjectures on weighted complete intersections (cf. London Mathematical Society, Lecture Note Series, 281, Cambridge University Press, 2000, 101–173) and give the complete classification of threefold weighted complete intersections in weighted projective space that are canonically or anticanonically embedded.
References
- Selma Altınok, Gavin Brown, and Miles Reid, Fano 3-folds, $K3$ surfaces and graded rings, Topology and geometry: commemorating SISTAG, Contemp. Math., vol. 314, Amer. Math. Soc., Providence, RI, 2002, pp. 25–53. MR 1941620, DOI https://doi.org/10.1090/conm/314/05420
- S. Altınok and M. Reid, Three Fano 3-folds with $|{-}K| = \emptyset$, Preprint.
- Gavin Brown and Kaori Suzuki, Fano 3-folds with divisible anticanonical class, Manuscripta Math. 123 (2007), no. 1, 37–51. MR 2300058, DOI https://doi.org/10.1007/s00229-007-0082-6
- J. A. Chen, M. Chen, Explicit birational geometry for 3-folds of general type, preprint. arXiv: 0706.2987
- Jungkai A. Chen and Meng Chen, An optimal boundedness on weak $\Bbb Q$-Fano 3-folds, Adv. Math. 219 (2008), no. 6, 2086–2104. MR 2456276, DOI https://doi.org/10.1016/j.aim.2008.08.002
- Alessio Corti, Aleksandr Pukhlikov, and Miles Reid, Fano $3$-fold hypersurfaces, Explicit birational geometry of 3-folds, London Math. Soc. Lecture Note Ser., vol. 281, Cambridge Univ. Press, Cambridge, 2000, pp. 175–258. MR 1798983
- Alexandru Dimca, Singularities and coverings of weighted complete intersections, J. Reine Angew. Math. 366 (1986), 184–193. MR 833017, DOI https://doi.org/10.1515/crll.1986.366.184
- Robin Hartshorne, Algebraic geometry, Springer-Verlag, New York-Heidelberg, 1977. Graduate Texts in Mathematics, No. 52. MR 0463157
- A. R. Fletcher, Contributions to Riemann-Roch on projective $3$-folds with only canonical singularities and applications, Algebraic geometry, Bowdoin, 1985 (Brunswick, Maine, 1985) Proc. Sympos. Pure Math., vol. 46, Amer. Math. Soc., Providence, RI, 1987, pp. 221–231. MR 927958
- A. R. Iano-Fletcher, Working with weighted complete intersections, Explicit birational geometry of 3-folds, London Math. Soc. Lecture Note Ser., vol. 281, Cambridge Univ. Press, Cambridge, 2000, pp. 101–173. MR 1798982
- Yujiro Kawamata, Boundedness of $\mathbf Q$-Fano threefolds, Proceedings of the International Conference on Algebra, Part 3 (Novosibirsk, 1989) Contemp. Math., vol. 131, Amer. Math. Soc., Providence, RI, 1992, pp. 439–445. MR 1175897
- Yujiro Kawamata, Divisorial contractions to $3$-dimensional terminal quotient singularities, Higher-dimensional complex varieties (Trento, 1994) de Gruyter, Berlin, 1996, pp. 241–246. MR 1463182
- János Kollár, Shafarevich maps and automorphic forms, M. B. Porter Lectures, Princeton University Press, Princeton, NJ, 1995. MR 1341589
- János Kollár, Yoichi Miyaoka, Shigefumi Mori, and Hiromichi Takagi, Boundedness of canonical $\mathbf Q$-Fano 3-folds, Proc. Japan Acad. Ser. A Math. Sci. 76 (2000), no. 5, 73–77. MR 1771144
- Igor Dolgachev, Weighted projective varieties, Group actions and vector fields (Vancouver, B.C., 1981) Lecture Notes in Math., vol. 956, Springer, Berlin, 1982, pp. 34–71. MR 704986, DOI https://doi.org/10.1007/BFb0101508
- Miles Reid, Canonical $3$-folds, Journées de Géometrie Algébrique d’Angers, Juillet 1979/Algebraic Geometry, Angers, 1979, Sijthoff & Noordhoff, Alphen aan den Rijn—Germantown, Md., 1980, pp. 273–310. MR 605348
- Miles Reid, Young person’s guide to canonical singularities, Algebraic geometry, Bowdoin, 1985 (Brunswick, Maine, 1985) Proc. Sympos. Pure Math., vol. 46, Amer. Math. Soc., Providence, RI, 1987, pp. 345–414. MR 927963
- Lei Zhu, The sharp lower bound for the volume of threefolds of general type with $\chi (\scr O_X)=1$, Math. Z. 261 (2009), no. 1, 123–141. MR 2452640, DOI https://doi.org/10.1007/s00209-008-0316-7
References
- S. Altınok, G. Brown, M. Reid, Fano 3-folds, $K3$ surfaces and graded rings. Topology and geometry: commemorating SISTAG, 25–53, Contemp. Math., 314, Amer. Math. Soc., Providence, RI, 2002. MR 1941620 (2004c:14077)
- S. Altınok and M. Reid, Three Fano 3-folds with $|{-}K| = \emptyset$, Preprint.
- G. Brown, K. Suzuki, Fano 3-folds with divisible anticanonical class, Manuscripta Math. 123 (2007), 37–51. MR 2300058 (2008a:14054)
- J. A. Chen, M. Chen, Explicit birational geometry for 3-folds of general type, preprint. arXiv: 0706.2987
- J. A. Chen, M. Chen, An optimal boundedness on weak $\mathbb {Q}$-Fano 3-folds, Adv. Math. 219 (2008), 2086–2104. arXiv: 0712.4356 MR 2456276 (2009h:14069)
- A. Corti, A. Pukhlikov, M. Reid, Fano $3$-fold hypersurfaces. Explicit birational geometry of 3-folds, 175–258, London Math. Soc. Lecture Note Ser., 281, Cambridge Univ. Press, Cambridge, 2000. MR 1798983 (2001k:14034)
- A. Dimca, Singularities and coverings of weighted complete intersections. J. Reine Angew. Math. 366 (1986), 184–193. MR 833017 (87g:14056)
- R. Hartshorne, Algebraic Geometry, Graduate Texts in Mathematics 52, Springer-Verlag, New York, Heidelberg, Berlin, 1977. MR 0463157 (57:3116)
- A. R. Iano-Fletcher, Contributions to Riemann–Roch on projective $3$-folds with only canonical singularities and applications, Proc. Symposia in Pure Math 46 (1987), Vol. 1, 221–231. MR 927958 (89h:14032)
- A. R. Iano-Fletcher, Working with weighted complete intersections, Explicit birational geometry of 3-folds. London Mathematical Society, Lecture Note Series, 281. Cambridge University Press, Cambridge, 2000, 101–173. MR 1798982 (2001k:14089)
- Y. Kawamata, Boundedness of $\mathbb {Q}$-Fano threefolds. Proceedings of the International Conference on Algebra, Part 3 (Novosibirsk, 1989), 439–445, Contemp. Math., 131, Part 3, Amer. Math. Soc., Providence, RI, 1992. MR 1175897 (93g:14047)
- Y. Kawamata, Divisorial contractions to $3$-dimensional terminal quotient singularities. Higher dimensional complex varieties, deGruyter, Berlin (1996), 241–246. MR 1463182 (98g:14005)
- J. Kollár, Shafarevich maps and automorphic forms. M. B. Porter Lectures. Princeton University Press, Princeton, NJ, 1995. MR 1341589 (96i:14016)
- J. Kollár, Y. Miyaoka, S. Mori, H. Takagi, Boundedness of canonical $\mathbb {Q}$-Fano 3-folds, Proc. Japan Acad. 76, Ser. A (2000), 73–77. MR 1771144 (2001h:14053)
- I. Dolgachev, Weighted projective space, Group actions and vector fields, Proc. Vancouver 1981 LNM $\mathbf {956}$, 34–71 Springer Verlag. MR 704986 (85g:14060)
- M. Reid, Canonical 3-folds, Journées de Géométrie Algébrique d’Angers, A. Beauville (editor), Sijthoff and Noordhoff, Alphen aan den Rijn, 1980, 273–310. MR 605348 (82i:14025)
- M. Reid, Young person’s guide to canonical singularities, Proc. Symposia in pure Math. 46 (1987), 345-414. MR 927963 (89b:14016)
- L. Zhu, The sharp lower bound for the volume of 3-folds of general type with $\chi (\mathcal {O}_{X})=1$, Math. Z. 261 (2009), 123–141. arXiv: 0710.4409 MR 2452640 (2009i:14053)
Additional Information
Jheng-Jie Chen
Affiliation:
Department of Mathematics, National Taiwan University, Taipei, 106, Taiwan
Email:
d94221006@ntu.edu.tw
Jungkai A. Chen
Affiliation:
Department of Mathematics, National Taiwan University, Taipei, 106, Taiwan
Email:
jkchen@math.ntu.edu.tw
Meng Chen
Affiliation:
Institute of Mathematics, Fudan University, Shanghai, 200433, People’s Republic of China
Email:
mchen@fudan.edu.cn
Received by editor(s):
September 11, 2008
Received by editor(s) in revised form:
May 17, 2009
Published electronically:
May 12, 2010
Additional Notes:
The second author was partially supported by TIMS, NCTS/TPE and National Science Council of Taiwan. The third author was supported by both the National Outstanding Young Scientist Foundation (#10625103) and the NNSFC (#10731030).