Torsion and Open Book Decompositions
Joint work with David Shea Vela-Vick.
Preprint 2009

We show that if $(B,\pi)$ is an open book decomposition of a contact 3--manifold $(Y,\xi)$, then the complement of the binding $B$ has no Giroux torsion. We also prove the sutured Heegaard-Floer $c$-bar invariant of the binding of an open book is non-zero.

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