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arXiv 1609.09592math.AG
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关于Iitaka猜想$C_{3,1}$正特征的注记

A note on Iitaka's conjecture $C_{3,1}$ in positive characteristics

Lei Zhang

摘要:

设$f:X\to Y$是特征为$p >5$的代数闭域$k$上从光滑3重射影曲线到光滑射影曲线的纤维化.我们证明了如果一般的光纤$X_η$有大的典范除子$K_{X_η}$,则$$κ(X)\geκ(Y) + κ(X_η).$$

英文摘要:

Let $f:X\to Y$ be a fibration from a smooth projective 3-fold to a smooth projective curve, over an algebraically closed field $k$ of characteristic $p >5$. We prove that if the generic fiber $X_η$ has big canonical divisor $K_{X_η}$, then $$κ(X)\geκ(Y) + κ(X_η).$$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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