冲击力
发表于 2025-3-28 17:13:30
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裙带关系
发表于 2025-3-28 20:30:47
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Ostrich
发表于 2025-3-29 02:55:17
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火光在摇曳
发表于 2025-3-29 05:27:13
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施加
发表于 2025-3-29 11:19:01
alar curvature: this should happen exactly when there are no ..-valued obstructions coming from Dirac operators. When the universal cover does not have a spin structure, the conjecture says there should always be a metric of positive scalar curvature, and we prove this if the dimension is ≥5 and if