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Orbit stratifications and smooth topology of positively curved six-manifolds with rank-one nonabelian symmetry

Gao, Minbo et al.
arXiv (All) · Papers
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differential-geometry
We study closed simply connected six-manifolds with positive sectional curvature and an effective isometric action of $SO(3)$ or $SU(2)$. Starting from Liu's corrected orbit-space analysis, we refine the stratification and recover smooth topology in several previously unresolved cases. For a boundar
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