%0 Journal Article %T Broken Lefschetz fibrations and smooth structures on 4-manifolds %A R. Inanc Baykur %J Mathematics %D 2012 %I arXiv %X The broken genera are orientation preserving diffeomorphism invariants of closed oriented 4-manifolds, defined via broken Lefschetz fibrations. We study the properties of the broken genera invariants, and calculate them for various 4-manifolds, while showing that the invariants are sensitive to exotic smooth structures. %U http://arxiv.org/abs/1205.5439v1