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arXiv 1809.01416math.DGmath.AT
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殆复流形的Dolbeault上同调

Dolbeault cohomology for almost complex manifolds

Joana Cirici, Scott O. Wilson

摘要:

本文将Dolbeault上同调及其相关理论推广到任意殆复流形。我们定义了一个收敛于普通上同调的谱序列,它的第一页是Dolbeault上同调,并发展了一个注入Dolbeault上同调的调和理论.李群理论的类似物的理论产生重要的计算工具的李群和nilmanifold。最后,我们研究了极大不可积流形的应用,包括近Kähler $6$ -流形,并表明Dolbeault上同调可以用来禁止存在的近Kähler度量。

英文摘要:

This paper extends Dolbeault cohomology and its surrounding theory to arbitrary almost complex manifolds. We define a spectral sequence converging to ordinary cohomology, whose first page is the Dolbeault cohomology, and develop a harmonic theory which injects into Dolbeault cohomology. Lie-theoretic analogues of the theory are developed which yield important calculational tools for Lie groups and nilmanifolds. Finally, we study applications to maximally non-integrable manifolds, including nearly Kähler $6$-manifolds, and show Dolbeault cohomology can be used to prohibit the existence of nearly Kähler metrics.

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