Graph manifolds with boundary are virtually special

Abstract

Let M be a graph manifold. We prove that fundamental groups of embedded incompressible surfaces in M are separable in the fundamental group of M, and that the double cosets for crossing surfaces are also separable. We deduce that if there is a "sufficient" collection of surfaces in M, then the fundamental group of M is virtually the fundamental group of a special nonpositively curved cube complex. We provide a sufficient collection for graph manifolds with boundary thus proving that their fundamental groups are virtually special, and hence linear.

20 pages, 9 figures

References in corpus (2)

• Mixed 3-manifolds are virtually special
• Virtual cubulation of nonpositively curved graph manifolds

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