zbMATH — the first resource for mathematics

A modification of the parallelogram law characterization of Hilbert spaces. (English) Zbl 0051.08601
Full Text: DOI EuDML
[1] Birkhoff, Garrett: Lattice Theory (Revised Edition). Amer. math. Soc. N. Y.1948. · Zbl 0033.10103
[2] Blumenthal L. M.: Distance Geometries. Columbia: University of Missouri 1938.
[3] Ellis, David: On the metric characterization of metric lattices. J. Indian Math. Soc.15, 152-154 (1951). · Zbl 0046.02802
[4] Halmos, Paul The Theory of Spectra Multiplicity (Mimeographed). Chicago: University of Chicago 1950.
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.