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arXiv 2202.12282math.DGmath.SG
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特殊拉格朗日子流形的分支形变

The branched deformations of the special Lagrangian submanifolds

Siqi He

摘要:

研究了浸入紧致特殊拉格朗日子流形的分支形变。如果在一个特殊的拉格朗日子流形$L$上存在一个非退化的$\mathbb{Z}_2$调和1-形式,我们构造了一族浸入的特殊拉格朗日子流形$\tilde{L}_t$,它们同构于$L$的一个分支覆盖,并且$\tilde{L}_t$作为流收敛于$2L$.这回答了唐纳森提出的一个问题。结合Abouzaid和Imagi的工作,我们得到了非退化$\mathbb{Z}_2$调和1-形式存在的限制条件.

英文摘要:

The branched deformations of immersed compact special Lagrangian submanifolds are studied in this paper. If there exists a nondegenerate $\mathbb{Z}_2$ harmonic 1-form over a special Lagrangian submanifold $L$, we construct a family of immersed special Lagrangian submanifolds $\tilde{L}_t$, that are diffeomorphic to a branched covering of $L$ and $\tilde{L}_t$ convergence to $2L$ as current. This answers a question suggested by Donaldson. Combining with the work of Abouzaid and Imagi, we obtain constraints for the existence of nondegenerate $\mathbb{Z}_2$ harmonic 1-forms.

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