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arXiv · 0908.0929

Homomorphisms between Kaehler groups

Donu Arapura
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Abstract

This is partly a survey and partly a research article. Some known results and open problems about Kaehler groups (fundamental groups of compact Kaehler manifolds) are discussed. A new notion of Kaehler homomorphism is introduced. This is a homomorphism induced by a holomorphic map between these types of manifolds. Some obstructions for a homomorphism to be Kaehler are discussed. Among these is the main result on the vanishing of a certain cohomology class associated to such map. This is reduced to the decomposition theorem for perverse sheaves suitably extended to Kaehler orbifolds.

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Donu Arapura. 2009-08-06. Homomorphisms between Kaehler groups. https://arxiv.org/abs/0908.0929

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