Mathematics – Algebraic Geometry
Scientific paper
1995-04-23
Mathematics
Algebraic Geometry
AMSLaTeX
Scientific paper
We show that minimal symplectic 4--manifolds with $b_2^+ >1$ 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.
Kotschick D.
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