Del Pezzo surfaces with nonrational singularities
Del Pezzo surfaces with nonrational singularities
复制标题
具有非有理奇点的 Del Pezzo 曲面
DOI:
10.1007/bf02360880
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发表时间:
1997
影响因子:
0.6
通讯作者:
I. Cheltsov
中科院分区:
文献类型:
--
作者:
I. Cheltsov
Normal algebraic surfacesXwith the property rk(Div(X)⊗ℚ/≡)=1, numerically ample canonical classes, and nonrational singularities are classified. It is proved, in particular, that any such surfaceXis a contraction of an exceptional section of a (possibly singular) relatively minimal ruled surfacewith a nonrational base. Moreover,f is uniquely determined by the surfaceX.