Abstract
We prove a version of Yau's Schwarz lemma for general almost-complex manifolds equipped with almost-Hermitian metrics. This requires an extension to this setting of the Laplacian comparison theorem. As an application, we show that the product of two almost-complex manifolds does not admit any complete almost-Hermitian metric with bisectional curvature bounded between two negative constants that satisfies some additional assumptions.
Original language | English (US) |
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Pages (from-to) | 1063-1086 |
Number of pages | 24 |
Journal | Communications in Analysis and Geometry |
Volume | 15 |
Issue number | 5 |
DOIs | |
State | Published - Dec 2007 |
ASJC Scopus subject areas
- Analysis
- Statistics and Probability
- Geometry and Topology
- Statistics, Probability and Uncertainty