Singular fibers of stable maps and signatures of 4-manifolds
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We show that for a C^infty stable map of an oriented 4-manifold into a 3-manifold, the algebraic number of singular fibers of a specific type coincides with the signature of the source 4-manifold.
This is the version published by Geometry & Topology on 7 April 2006
This is the version published by Geometry & Topology on 7 April 2006