De Blasi, Francesco S. On a property of the unit sphere in a Banach space. (English) Zbl 0365.46015 Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 21(69), 259-262 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 13 ReviewsCited in 157 Documents MSC: 46B10 Duality and reflexivity in normed linear and Banach spaces 47H99 Nonlinear operators and their properties PDF BibTeX XML Cite \textit{F. S. De Blasi}, Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 21(69), 259--262 (1977; Zbl 0365.46015) OpenURL