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Affine threefolds whose log canonical bundles are not numerically effective
- Source :
-
Journal of Pure & Applied Algebra . Jan2007, Vol. 208 Issue 1, p189-204. 16p. - Publication Year :
- 2007
-
Abstract
- Abstract: Let be a compactification of an affine 3-fold into a smooth projective 3-fold such that the (reduced) boundary divisor is SNC. In this paper, as an affine counterpart to the work due to S. Mori (cf. [S. Mori, Threefolds whose canonical bundles are not numerically effective, Ann. of Math. 116 (1982) 133–176]), we shall classify -negative extremal rays on . In particular, if such an extremal ray intersects non-negatively, we shall describe the log flips and divisorial contractions appearing explicitly. [Copyright &y& Elsevier]
- Subjects :
- *MATHEMATICS
*NUMERICAL analysis
*ALGEBRA
*MATHEMATICAL analysis
Subjects
Details
- Language :
- English
- ISSN :
- 00224049
- Volume :
- 208
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Pure & Applied Algebra
- Publication Type :
- Academic Journal
- Accession number :
- 22966156
- Full Text :
- https://doi.org/10.1016/j.jpaa.2005.12.007