On the slope of bielliptic fibrations
On the slope of bielliptic fibrations
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DOI:
10.1090/s0002-9939-00-05865-2
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发表时间:
2000-12
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影响因子:
--
通讯作者:
M. A. Barja
中科院分区:
文献类型:
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作者:
M. A. Barja
Let $\pi :S\longrightarrow B$ be a bielliptic fibration. We prove $S$ is, up to base change, a rational double cover of an elliptic fibration and that $\pi $ is isotrivial provided it is smooth. Finally, we prove that the slope of $\pi $ is at least four provided the genus of the fibre is at least six.