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CD meets CAT
Journal für die reine und angewandte Mathematik ( IF 1.5 ) Pub Date : 2019-08-20 , DOI: 10.1515/crelle-2019-0021
Vitali Kapovitch 1 , Christian Ketterer 1
Affiliation  

We show that if a noncollapsed CD(K,n) space X with n2 has curvature bounded above by κ in the sense of Alexandrov, then K(n-1)κ and X is an Alexandrov space of curvature bounded below by K-κ(n-2). We also show that if a CD(K,n) space Y with finite n has curvature bounded above, then it is infinitesimally Hilbertian.

中文翻译:

CD符合CAT

我们证明,如果未塌陷 光盘ķñ空间Xñ2 在亚历山德罗夫的意义上具有由κ限制的曲率,然后 ķñ--1个κX为曲率由以下界定的空间亚历山德罗ķ--κñ--2。我们还表明,如果光盘ķñ具有有限n的空间Y的曲率有界,那么它是无限希尔伯特式的。
更新日期:2019-08-20
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