An alternative proof of Berg and Nikolaev’s characterization of CAT(0)-spaces via quadrilateral inequality
Author:
Publisher
Springer Science and Business Media LLC
Subject
General Mathematics
Link
http://link.springer.com/content/pdf/10.1007/s00013-009-0057-9.pdf
Reference13 articles.
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3. Berg I.D., Nikolaev I.G.: Quasilinearization and curvature of Aleksandrov spaces. Geom. Dedicata 133, 195–218 (2008)
4. Bridson M.R., Haefliger A.: Metric spaces of non-positive curvature. Springer-Verlag, Berlin (1999)
5. Bruhat F., Tits J.: Groupes réductifs sur un corps local (French). Inst. Hautes Études Sci. Publ. Math. 41, 5–251 (1972)
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