Connected sums and finite energy foliations I: Contact connected sums (1311.4221v2)

Abstract: We consider a $3$-manifold $M$ equipped with nondegenerate contact form $\lambda$ and compatible almost complex structure $J$. We show that if the data $(M, \lambda, J)$ admits a stable finite energy foliation, then for a generic choice of distinct points $p$, $q\in M$, the manifold $M'$ formed by taking the connected sum at $p$ and $q$ admits a nondegenerate contact form $\lambda'$ and compatible almost complex structure $J'$ so that the data $(M', \lambda', J')$ also admits a stable finite energy foliation. Along the way, we develop some general theory for the study of finite energy foliations.