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arXiv 1808.09356math.DGmath.SG
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闭$J$ -反不变形式的$J$ -全纯曲线

$J$-holomorphic curves from closed $J$-anti-invariant forms

Louis Bonthrone, Weiyi Zhang

摘要:

本文研究了$J$ -反不变$2$ -形式与伪全纯曲线的关系。证明了几乎复$4$ -流形上的闭$J$ -反不变$J$-形式的零集在规范类中支持$J$ -全纯子簇.这证实了德拉吉奇-李-张的一个猜想。建立了一个更高维的类比。我们还证明了几乎复$4$ -流形上的闭$J$ -反不变$2$ -形式的维数是双有理不变量,在这个意义上它在一次伪全纯映射下是不变的.

英文摘要:

We study the relation between $J$-anti-invariant $2$-forms and pseudoholomorphic curves in this paper. We show the zero set of a closed $J$-anti-invariant $2$-form on an almost complex $4$-manifold supports a $J$-holomorphic subvariety in the canonical class. This confirms a conjecture of Draghici-Li-Zhang. A higher dimensional analogue is established. We also show the dimension of closed $J$-anti-invariant $2$-forms on an almost complex $4$-manifold is a birational invariant, in the sense that it is invariant under degree one pseudoholomorphic maps.

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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