Planar Lefschetz fibrations and Stein structures with distinct Ozsvath-Szabo invariants on corks

Cagri Karakurt, Takahiro Oba, Takuya Ukida

Thanks to a result of Lisca and Matic and a refinement by Plamenevskaya, it is known that on a 4-manifold with boundary Stein structures with non-isomorphic Spinc structures induce…