On the invariants of base changes of pencils of curves, I
On the invariants of base changes of pencils of curves, I
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DOI:
10.1007/bf02567455
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发表时间:
1994-12
影响因子:
0.6
通讯作者:
Shengli Tan
中科院分区:
文献类型:
--
作者:
Shengli Tan
The main purpose of this paper is to prove the nonnegativity of the basic invariants of base changes of a surface fibration, which is conjectured by Xiao Gang. For this purpose we obtain some new inequalities between the invariants of the singularities ofzd=f(x, y).