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arXiv 0907.5082math.CVmath.DG
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一维全纯叶理的接触几何

Contact geometry of one dimensional holomorphic foliations

Giuseppe Tomassini, Sergio Venturini

摘要:

设V是复维数n+1的复流形M中类C^k,k ≥ 3的实超曲面,HT(V)是V的全纯切丛,给出V上的诱导CR结构。设θ是(V,HT(V))的切触形式,θ_0是由θ确定的Reeb向量场,并假定θ_0是类C^k。在本文中,我们证明了以下定理(cf.定理4.1):如果V_0的积分曲线是实解析的,则存在V的开邻域N \subset M和复蒙日-安培方程(dd^c u)^(n+1)=0在N上的解u \in C^k(N),N是V的定义方程。此外,与u相关的蒙日-安培叶理在V上诱导与Reeb向量场相关的叶理。反之亦然。结果是通过求解余维为1的CR分布的无穷小对称性的柯西问题而得到的。定理3.1)。

英文摘要:

Let V be a real hypersurface of class C^k, k>=3, in a complex manifold M of complex dimension n+1, HT(V) the holomorphic tangent bundle to V giving the induced CR structure on V. Let θbe a contact form for (V,HT(V)), ξ_0 the Reeb vector field determined by θand assume that ξ_0 is of class C^k. In this paper we prove the following theorem (cf. Theorem 4.1): if the integral curves of ξ_0 are real analytic then there exist an open neighbourhood N\subset M of V and a solution u\in C^k(N) of the complex Monge-Ampère equation (dd^c u)^(n+1)=0 on N which is a defining equation for V. Moreover, the Monge-Ampère foliation associated to u induces on V that one associated to the Reeb vector field. The converse is also true. The result is obtained solving a Cauchy problem for infinitesimal symmetries of CR distributions of codimension one which is of independent interest (cf. Theorem 3.1).

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