Alsina, Claudi; Guijarro, Piedad; Tomás, Maria S. Some remarkable lines of triangles in real normed spaces and characterizations of inner product structures. (English) Zbl 0906.39012 Aequationes Math. 54, No. 3, 234-241 (1997). Reviewer: M.C.Zdun (Kraków) MSC: 39B52 46C05 39B05 PDFBibTeX XMLCite \textit{C. Alsina} et al., Aequationes Math. 54, No. 3, 234--241 (1997; Zbl 0906.39012) Full Text: DOI EuDML
Alsina, Claudi; Guijarro, Piedad; Tomás, Maria S. Generalizations of characterizations of inner product structures under differentiability conditions. (English) Zbl 0858.46020 Arch. Math. 66, No. 3, 228-232 (1996). Reviewer: C.Alsina (Barcelona) MSC: 46C15 PDFBibTeX XMLCite \textit{C. Alsina} et al., Arch. Math. 66, No. 3, 228--232 (1996; Zbl 0858.46020) Full Text: DOI