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Online ISSN 1534-7486; Print ISSN 1056-3911
Classification of primary $\mathbb {Q}$-Fano threefolds with anti-canonical Du Val $K3$ surfaces, I
Author:
Hiromichi Takagi
Journal:
J. Algebraic Geom. 15 (2006), 31-85
DOI:
https://doi.org/10.1090/S1056-3911-05-00416-9
Published electronically:
June 27, 2005
MathSciNet review:
2177195
Full-text PDF
Abstract | References | Additional Information
Abstract: If a non-Gorenstein $\mathbb {Q}$-Fano threefold with only cyclic quotient terminal singularities has anti-canonical Du Val $K3$ surfaces and the anti-canonical class generates the group of numerical equivalence classes of divisors, then the dimension of the space of global sections of the anti-canonical sheaf is shown to be not greater than ten. Such $\mathbb {Q}$-Fano threefolds with the dimension not less than nine are classified.
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Additional Information
Hiromichi Takagi
Affiliation:
Graduate School of Mathematical Sciences, the University of Tokyo, Tokyo, 153-8914, Japan
Email:
takagi@ms.u-tokyo.ac.jp
Received by editor(s):
June 17, 2004
Received by editor(s) in revised form:
April 6, 2005, April 22, 2005, and May 12, 2005
Published electronically:
June 27, 2005