Four-dimensional manifolds with positive biorthogonal curvature
classification
🧮 math.DG
math.GT
keywords
manifoldspositiveadmitaveragesbiorthogonalclassifyclosedcurvature
read the original abstract
We classify, up to homeomorphisms, the closed simply-connected 4-manifolds that admit a Riemannian metric for which averages of pairs of sectional curvatures of orthogonal planes are positive.
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