Every closed four-manifold with at least two Z2-conical points admits a Yamabe metric, a conformal metric of constant scalar curvature, via a new min-max argument.
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Min-max theory and Yamabe metrics on conical four-manifolds
Every closed four-manifold with at least two Z2-conical points admits a Yamabe metric, a conformal metric of constant scalar curvature, via a new min-max argument.