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A note on real H*-algebras

Published online by Cambridge University Press:  24 October 2008

M. Cabrera
Affiliation:
Departamento de Análisis Matemático, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
J. Martinez
Affiliation:
Departamento de Análisis Matemático, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
A. Rodriguez
Affiliation:
Departamento de Análisis Matemático, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain

Extract

Complex (associative) H*-algebras were introduced and studied in detail by Ambrose[1]; it was proved that every complex H*-algebra with zero annihilator is the l2-sum of a suitable family of topologically simple complex H*-algebras and that the H*-algebras (H) of all Hilbert-Schmidt operators on any complex Hilbert space H are the only topologically simple complex H*-algebras. In a recent paper [2] Balachandran and Swaminathan observe that the reduction of the theory of real H*-algebras to the topologically simple case follows easily with minor changes of the complex argument, and they prove a theorem describing topologically simple real H*-algebras. This theorem can be equivalently reformulated as follows.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1989

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References

REFERENCES

[1]Ambrose, W.. Structure theorems for a special class of Banach algebras. Trans. Amer. Math. Soc. 57 (1945), 364386.CrossRefGoogle Scholar
[2]Balachandran, V. K. and Swaminathan, N.. Real H*-algebras. J. Funct. Anal. 65 (1986), 6475.CrossRefGoogle Scholar
[3]Hanche-Olsen, H. and St⊘rmer, E.. Jordan Operator Algebras (Pitman, 1984).Google Scholar
[4]Rickart, C. E.. General Theory of Banach Algebras (Van Nostrand, 1960).Google Scholar