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arXiv 1709.02544math.SGmath.GT
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辛合痕问题的一种新解法

A new approach to the symplectic isotopy problem

Laura Starkston

摘要:

辛合线猜想指出,$CP^2$中的每一个光滑辛曲面都与复代数曲线辛合线。进展始于格罗莫夫的伪全纯曲线[Gro85],并在Siebert和Tian的猜想证明中进一步发展到17度[ST 05],但进一步的进展已经停滞。在这篇文章中,我们提供了一个新的方向攻击这个问题。使用一个节点辛合痕问题的解决方案,我们引导模型辛合痕的光滑表面。这导致了光滑辛合痕问题和某些嵌入拉格朗日圆盘的存在性问题之间的等价性。这将这个问题的研究从高亏格的伪全纯曲线的领域转向拉格朗日和Floer理论的领域。由于主要定理是双向等价的,理论上可以用来证明或证伪辛合痕猜想。

英文摘要:

The symplectic isotopy conjecture states that every smooth symplectic surface in $CP^2$ is symplectically isotopic to a complex algebraic curve. Progress began with Gromov's pseudoholomorphic curves [Gro85], and progressed further culminating in Siebert and Tian's proof of the conjecture up to degree 17 [ST05], but further progress has stalled. In this article we provide a new direction of attack on this problem. Using a solution to a nodal symplectic isotopy problem we guide model symplectic isotopies of smooth surfaces. This results in an equivalence between the smooth symplectic isotopy problem and an existence problem of certain embedded Lagrangian disks. This redirects study of this problem from the realm of pseudoholomorphic curves of high genus to the realm of Lagrangians and Floer theory. Because the main theorem is an equivalence going both directions, it could theoretically be used to either prove or disprove the symplectic isotopy conjecture.

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