Volume 17, Issue 2 Ryotaro Tanaka Tomoyoshi Ohwada Kichi-Suke Saito Geometric constants and characterizations of inner product spaces Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Ryotaro Tanaka Tomoyoshi Ohwada Kichi-Suke Saito Find more articles with the same keywords inner product space absolute normalized norm BJ-orthogonality Find more articles with the same subject classes 46B20 46C15