Pythagorean Theorem & Curvature with Lower or Upper Bound* |
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| Authors: | Yusheng WANG |
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| Institution: | Corresponding author. School of Mathematical Sciences (and Lab. math. Com. Sys.),Beijing Normal University, Beijing, 100875, China. |
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| Abstract: | In this paper, the authors give a comparison version of Pythagorean theorem to judge the lower or upper bound of the curvature of Alexandrov spaces (including Riemannian manifolds). |
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