Geodesic
Circumcenters in real normed spaces
Bollettino della Unione matematica italiana, Série 8, 8B (2005) no. 2, pp. 421-430.

Voir la notice de l'article provenant de la source Biblioteca Digitale Italiana di Matematica

The study of circumcenters in different types of triangles in real normed spaces gives new characterizations of inner product spaces.
Lo studio dei circocentri in tipi diferenti di triangoli appartenenti a spazi normati reali ci dà nuove caratterizzazioni degli spazi con prodotto scalare. 
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Tomás, M. S. Circumcenters in real normed spaces. Bollettino della Unione matematica italiana, Série 8, 8B (2005) no. 2, pp. 421-430. http://geodesic.mathdoc.fr/item/BUMI_2005_8_8B_2_a8/

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