Hirschfeld, R. A.; Rolewicz, Stefan A class of non-commutative Banach algebras without divisors of zero. (English) Zbl 0189.44501 Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 17, 751-753 (1969). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:functional analysis PDFBibTeX XMLCite \textit{R. A. Hirschfeld} and \textit{S. Rolewicz}, Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 17, 751--753 (1969; Zbl 0189.44501)