Chinese Quarterly Journal of Mathematics ›› 1998, Vol. 13 ›› Issue (1): 70-73.

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Angles of Norm ed Linear Spaces and Characterizations of Inner Product Spaces

  

  1. Institute of technology,Yangzhou University,Yangzhou,225006

  • Received:1996-06-24 Online:1998-03-30 Published:2024-11-07

Abstract: In [1],a family of angles are defined in normed linear spaces. In this paper,it is shown that if anyone of the angles satisfies certain euclidean triangle congruence properties,the space must be an inner product space. 

Key words:  , angle;normed linear space;inner product space;orthogonality

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