English

On irreducible four--manifolds

alg-geom 2008-02-03 v1 Algebraic Geometry

Abstract

We show that minimal symplectic 4--manifolds with b2+>1b_2^+ >1 and with residually finite fundamental groups are irreducible. We also give examples of irreducible orientable four--manifolds with indefinite intersection forms which are not almost complex with respect to either orientation.

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Cite

@article{arxiv.alg-geom/9504012,
  title  = {On irreducible four--manifolds},
  author = {D. Kotschick},
  journal= {arXiv preprint arXiv:alg-geom/9504012},
  year   = {2008}
}

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