1998/52/3-4 (2) — DOI: 10.5486/PMD.1998.2027 — pp. 275-280
Full Text Abstract

On a generalized Lagrange's identity characterizing inner product spaces

Authors: Claudi Alsina

Keywords: Lagrange's identity, inner product, norm derivatives

Mathematics Subject Classification: 39B50, 46C15, 39B52