A Simple Geometric Representative for $\mu$ of a Point

Abstract

For $SU(2)$ (or $SO(3)$) Donaldson theory on a 4-manifold $X$, we construct a simple geometric representative for $\mu$ of a point. Let $p$ be a generic point in $X$. Then the set $\{[A]|F_A^{-}(p)$ is reducible $\}$, with coefficient -1/4 and appropriate orientation, is our desired geometric representative.

Updated 2018 to published version. 8 pages, AmS-TeX, no figures

Cited by in corpus (1)

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