On Einstein Manifolds of Positive Sectional Curvature
Gursky, Matthew · LeBrun, Claude
Original · EN
Let (M,g) be a compact oriented Einstein 4-manifold. If M has positive intersection form and g has non-negative sectional curvature, we show that, up to rescaling and isometry, (M,g) is CP2, equipped with its standard Fubini-Study metric.
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