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arXiv 2111.00518math.DGmath.APmath.CV
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几乎Hermitian四维流形上的Bott-Chern和$\bar\partial$调和形式

Bott-Chern and $\bar\partial$ Harmonic forms on Almost Hermitian 4-manifolds

Tom Holt

摘要:

证明了在紧几乎Hermitian 4-流形上,$\bar\partial$ -调和$(1,1)$ -形式空间总是维数为$h_{\bar\partial}^{1,1} = b_- +1$或$b_-$,而Bott-Chern调和$(1,1)$ -形式空间总是维数为$h_{BC}^{1,1} = b_- +1$ .我们还进行计算的$h^{2,1}_{BC}$和$h^{1,2}_{BC}$的Kodaira-Thurston流形,从而提供了一个完整的帐户时,$h^{p,q}_{BC}$是或不是不变的几乎厄米特度量的选择。最后,我们介绍了$L^2$功能的空间上的所有环面丛$S^1$,这已被证明是有用的求解线性偏微分方程的分解,我们证明了它的使用中的计算$h^{p,q}_{\bar\partial}$。

英文摘要:

We prove that on a compact almost Hermitian 4-manifold the space of $\bar\partial$-harmonic $(1,1)$-forms always has dimension $h_{\bar\partial}^{1,1} = b_- +1$ or $b_-$, whilst the space of Bott-Chern harmonic $(1,1)$-forms always has dimension $h_{BC}^{1,1} = b_- +1$. We also perform calculations of $h^{2,1}_{BC}$ and $h^{1,2}_{BC}$ on the Kodaira-Thurston manifold, thereby providing a full account of when $h^{p,q}_{BC}$ is or is not invariant of the choice of almost Hermitian metric. Finally, we introduce a decomposition of the space of $L^2$ functions on all torus bundles over $S^1$, which has proven useful for solving linear PDEs, and we demonstrate its use in the calculation of $h^{p,q}_{\bar\partial}$.

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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