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arXiv 1802.07087math.DG
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闭伪Hermite流形的收敛性

Convergence of Closed Pseudo-Hermitian Manifolds

Shu-Cheng Chang, Yuxin Dong, Yibin Ren

摘要:

利用一致CR Sobolev不等式和Moser迭代方法,研究了闭伪Hermitian流形的收敛性.利用次椭圆不等式,证明了具有一致几何条件的闭正规伪爱因斯坦流形集是紧的。此外,具有Carnot-Carathéodory距离上有界,体积下有界,$L^{n + \frac{1}{2}}$范数为伪Hermite曲率有界的闭正规化SasakianPDMATHABMM-Einstein $(2n+1)$ -流形是$C^\infty$紧的.作为应用,我们将推导出以Sasakian流形为环的完备Kähler锥的一些点收敛性。

英文摘要:

Based on uniform CR Sobolev inequality and Moser iteration, this paper investigates the convergence of closed pseudo-Hermitian manifolds. In terms of the subelliptic inequality, the set of closed normalized pseudo-Einstein manifolds with some uniform geometric conditions is compact. Moreover, the set of closed normalized Sasakian $η$-Einstein $(2n+1)$-manifolds with Carnot-Carathéodory distance bounded from above, volume bounded from below and $L^{n + \frac{1}{2}}$ norm of pseudo-Hermitian curvature bounded is $C^\infty$ compact. As an application, we will deduce some pointed convergence of complete Kähler cones with Sasakian manifolds as their links.

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