Contact Structures on Plumbed 3-Manifolds

Cagri Karakurt

In this paper, we show that the Ozsváth-Szabó contact invariant $c^{+}(\xi )\in H{F}^{+}(-Y)$ of a contact 3-manifold $(Y,\xi )$ can be calculated combinatorially if $Y$ is the boundary of a c…