Integral identities of norms over compact groups are used to characterize inner product spaces. These integral identities also generalize the Penico- Stanojevic  integral form of the parallelogram law. © 1981 American Mathematical Society. © 1981 American Mathematical Society.
Č. V. Stanojevlć and A. M. Suchanek, "Integral Identities Of Norms And Characterization Of Inner Product Spaces," Proceedings of the American Mathematical Society, vol. 81, no. 1, pp. 101 - 103, American Mathematical Society, Jan 1981.
The definitive version is available at https://doi.org/10.1090/S0002-9939-1981-0589146-3
Mathematics and Statistics
Keywords and Phrases
Inner product spaces
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 1981