arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0909.3946math.DG
收藏

几乎切触流形上具有挠结构的强Kaehler流形

Strong Kaehler with torsion structures from almost contact manifolds

Marisa Fernandez, Anna Fino, Luis Ugarte, Raquel Villacampa

摘要:

对于几乎切触度量流形$N$,我们找到了$N$上的$S^1$ -丛的全空间或$N$上的黎曼锥具有强Kähler扭(SKT)结构的条件.这样我们构造了新的6维SKT流形。此外,我们还研究了SKT流形的超曲面上的几何结构,并利用这些结构通过适当的发展方程构造新的SKT流形。研究了流形上具有三个几乎切触结构的$S^1$ -丛的全空间上的有挠超Kähler(HKT)结构.

英文摘要:

For an almost contact metric manifold $N$, we find conditions for which either the total space of an $S^1$-bundle over $N$ or the Riemannian cone over $N$ admits a strong Kähler with torsion (SKT) structure. In this way we construct new 6-dimensional SKT manifolds. Moreover, we study the geometric structure induced on a hypersurface of an SKT manifold, and use such structures to construct new SKT manifolds via appropriate evolution equations. Hyper-Kähler with torsion (HKT) structures on the total space of an $S^1$-bundle over manifolds with three almost contact structures are also studied.

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。

↑