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Štěrbová, Dina
On the spectral properties of elements of the type exp(ih) in Hermitian Banach algebras. (English). Sborník prací Přírodovědecké fakulty University Palackého v Olomouci. Matematika, vol. 17 (1978), issue 1, pp. 109-114
MSC: 46H20, 46H30, 46K05 | MR 0554041 | Zbl 0433.46041
References:
[1] Bonsall F. F., Duncan J.: Complete Normed Algebras. Springer-Verlag 1973. MR 0423029 | Zbl 0271.46039
[2] Naimark M. A.: Normirovannyje kolca. Moskva 1968.
[3] Gelfand I. M., Naimark M. A.: On the imbedding of normed rings into the ring of operators on Hilbert space. Mat. Sborník 12, 197-213 (1943). MR 0009426
[4] Pták V.: Banach algebras with involution. Manuscripta math. 6, p. 245-290 (1972), Springer-Verlag. MR 0296705
[5] Pták V.: On the spectral radius in Banach algebras with involution. Bull. Lond. Math. Soc. 2, p. 327-334 (1970). MR 0275175
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