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arXiv 1402.4985math.DG
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复值调和态射的曲率条件

Curvature conditions for complex-valued harmonic morphisms

Jonas Nordström

摘要:

我们研究了一个流形的曲率,在这个流形上可以定义一个复值的浸没调和态射,它要么是全测地纤维,要么是关于一个与第二基本型相容的复结构的全纯的。我们还给出了爱因斯坦流形上具有全测地纤维的复值调和态射存在的一个必要曲率条件。

英文摘要:

We study the curvature of a manifold on which there can be defined a complex-valued submersive harmonic morphism with either, totally geodesic fibers or that is holomorphic with respect to a complex structure which is compatible with the second fundamental form. We also give a necessary curvature condition for the existence of complex-valued harmonic morphisms with totally geodesic fibers on Einstein manifolds.

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