Mathematics – Geometric Topology
Scientific paper
2001-08-02
Mathematics
Geometric Topology
10 pages, AMSTeX
Scientific paper
In this note we prove that any closed graph manifold admitting a metric of
non-positive sectional curvature (NPC-metric) has a finite cover, which is
fibered over the circle.
An explicit criterion to have a finite cover, which is fibered over the
circle, is presented for the graph manifolds of certain class.
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