Let denote a compact, orientable 3–dimensional manifold and let a denote a contact 1–form on ; thus a da is nowhere zero. This article explains how the Seiberg–Witten Floer homology groups as defined for any given structure on give closed, integral curves of the vector field that generates the kernel of .
"The Seiberg–Witten equations and the Weinstein conjecture II: More closed integral curves of the Reeb vector field." Geom. Topol. 13 (3) 1337 - 1417, 2009. https://doi.org/10.2140/gt.2009.13.1337