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Yamabe Constants and the Perturbed Seiberg-Witten Equations

Claude LeBrun

dg-gaarXiv:dg-ga/9605009

Abstract

Among all conformal classes of Riemannian metrics on CP2, that of the Fubini-Study metric is shown to have the largest Yamabe constant. The proof, which involves perturbations of the Seiberg-Witten equations, also yields new results on the total scalar curvature of almost-Kähler 4-manifolds.

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