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arXiv 2203.01736math.DG
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Sasakian 5-流形上Sasaki-里奇流的叶分裂收缩

Foliation divisorial contraction by the Sasaki-Ricci flow on Sasakian 5-manifolds

Shu-Cheng Chang, Chien Lin, Chin-Tung Wu

摘要:

设(M,η,θ,Φ,g)是具有有限个(1/r)(1,a)型循环商叶状奇点的紧致拟正则Sasakian 5-流形.首先,我们利用循环商叶理奇点的分解,导出了叶理极小模型程序。其次,在研究了片理奇点分解的局部模型的基础上,证明了Sasaki-里奇流下的片理正则外科收缩或片理极值射线收缩。因此,我们证明了Sasaki模拟的解析极小模型程序的Keahler-里奇流由于宋田和宋Weinkove。

英文摘要:

Let (M,η,ξ,Φ,g) be a compact quasi-regular Sasakian 5-manifold with finite cyclic quotient foliation singularities of type (1/r)(1,a). First, we derive the foliation minimal model program by applying the resolution of cyclic quotient foliation singularities. Secondly, based on the study of local model of resolution of foliation singularities, we prove the foliation canonical surgical contraction or the foliation extremal ray contraction under the Sasaki-Ricci flow. As a consequence, we prove a Sasaki analogue of analytic minimal model program with the Keahler-Ricci flow due to Song-Tian and Song-Weinkove.

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