The diameter sphere theorem up to diffeomorphism
Decide whether a manifold with sectional curvature at least 1 and diameter above π/2 must be diffeomorphic to the standard sphere.
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Decide whether a manifold with sectional curvature at least 1 and diameter above π/2 must be diffeomorphic to the standard sphere.
选两个分支看看改了什么,再发起 PR 把工作带过去。
PR 可以从任何一个分支合入任何另一个分支。