Hostname: page-component-7479d7b7d-8zxtt Total loading time: 0 Render date: 2024-07-11T08:29:21.175Z Has data issue: false hasContentIssue false

Non-unital Banach Jordan algebras and C*-triple systems

Published online by Cambridge University Press:  20 January 2009

M. A. Youngson
Affiliation:
Department of MathematicsHeriot-Watt UniversityEdinburgh
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The definition of a suitable Jordan analogue of C*-algebras (which we call JB*-algebras in this paper) was recently suggested by Kaplansky (see (26)). The theory of unital JB*-algebras is now comparatively well understood due to the work of Alfsen, Shultz and Størmer (1) from which a Gelfand-Neumark theorem for unital JB*-algebras can be obtained (26). Independently, from work on simply connected symmetric complex Banach manifolds with base point, Kaup introduced the definition of C*-triple systems in (14) and subsequently in (7) it was shown that every unital JB*-algebra is a C*-triple system. In this paper, we wish to extend this result to show that every JB*-algebra is a C*-triple system.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1981

References

REFERENCES

(1)Alfsen, E. M., Shultz, F. W. and Størmer, E., A Gelfand-Neumark theorem for Jordan algebras, Advances in Math. 28 (1978) 1156.CrossRefGoogle Scholar
(2)Arens, R., Operations Induced in Function Classes, Monatshefte für Math. 55 (1951), 119.CrossRefGoogle Scholar
(3)Asimov, L. A. and Ellis, A. J., On Hermitian functionals on unital Banach algebras, Bull. London Math. Soc. 4 (1973), 333336.CrossRefGoogle Scholar
(4)Behncke, H., Hermitian Jordan Banach algebras, J. London Math. Soc. (2) 20 (1979), 327333.CrossRefGoogle Scholar
(5)Bonsall, F. F. and Duncan, J., Numerical ranges of operators on normed spaces and of elements of normed algebras (London Math. Soc. Lecture Note Series 2, Cambridge, 1971).CrossRefGoogle Scholar
(6)Bonsall, F. F. and Duncan, J., Numerical ranges II (London Math. Soc. Lecture Note Series 10, Cambridge, 1973).CrossRefGoogle Scholar
(7)Braun, R., Kaup, W. and Upmeier, H., A Holomorphic Characterization of Jordan C*-Algebras, Math. Z. 161 (1978), 277290.CrossRefGoogle Scholar
(8)Devapakkiam, C. V., Jordan algebras with continuous inverse, Math. Jap. 16 (1971), 115125.Google Scholar
(9)Edwards, C. M., On the centres of hereditary JBW-subalgebras of a JBW-algebra, Math. Proc. Camb. Phil. Soc. 85 (1979), 317324.CrossRefGoogle Scholar
(10)Harris, L. A., Bounded symmetric homogeneous domains in infinite dimensional spaces, Proceedings on Infinite Dimensional Homomorphy (Springer Lecture Notes 364, 1973).Google Scholar
(11)Jacobson, N., Structure and Representations of Jordan Algebras (A.M.S. Colloquium Publications Vol 39. A.M.S., Providence, Rhode Island, 1968).CrossRefGoogle Scholar
(12)Jordan, P., von Neumann, J. and Wigner, E., On an algebraic generalization of the quantum mechanical formalism, Ann. of Math. 35 (1934), 2964.CrossRefGoogle Scholar
(13)Kadison, R. V., Isometrics of operator algebras, Ann. of Math. 54 (1951), 325338.CrossRefGoogle Scholar
(14)Kaup, W., Algebraic characterization of symmetric complex Banach manifolds, Math. Ann. 228 (1977), 3964.CrossRefGoogle Scholar
(15)Kaup, W., Bounded Symmetric Domains in finite and infinite Dimensions-a Review, Proceedings of International Conference on Several Complex Variables(Scuola Normale Superiore,Pisa,1978).Google Scholar
(16)Kaup, W. and Upmeier, H., Jordan Algebras and Symmetric Siegel Domains in Banach spaces, Math. Z. 157 (1977), 179200.CrossRefGoogle Scholar
(17)Miles, P., B*-algebra unit ball extremal points, Pac. J. Math. 14 (1964), 627637.CrossRefGoogle Scholar
(18)Moore, R. T., Hermitian functionals on Banach algebras and duality characterizations of C*-algebras, Trans. Amer. Math. Soc. 162 (1971), 253266.Google Scholar
(19)Moreno, J. M., JV-algebras, Math. Proc. Camb. Phil. Soc. 87 (1980), 4750.CrossRefGoogle Scholar
(20)Palacios, A. R., A Vidav-Palmer theorem for Jordan C*-algebras and related topics, J. London Math. Soc. (2) 22 (1980), 318332.CrossRefGoogle Scholar
(21)Rudin, W., Functional Analysis (Tata McGraw-Hill, New Delhi, 1974).Google Scholar
(22)Sakai, S., The theory of W*-algebras (Mimeographed lecture notes, Yale University, 1962).Google Scholar
(23)Shultz, F. W., On normed Jordan algebras which are Banach dual spaces, J. Funct. Anal. 31 (1979), 360376.CrossRefGoogle Scholar
(24)Smith, R. R., On non-unital Jordan-Banach algebras, Math. Proc. Camb. Phil. Soc. 82 (1977), 375380.CrossRefGoogle Scholar
(25)Størmer, E., On the Jordan structure of C*-algebras, Trans. Amer. Math. Soc. 120 (1965), 438447.Google Scholar
(26)Wright, J. D. M., Jordan C*-algebras, Mich. Math. J. 24 (1977), 291302.CrossRefGoogle Scholar
(27)Wright, J. D. M., and Youngson, M. A., A Russo Dye theorem for Jordan C*-algebras, Functional Analysis: Surveys and Recent Results (North Holland, 1977)Google Scholar
(28)Youngson, M. A., A Vidav theorem for Banach Jordan algebras, Math. Proc. Camb. Phil. Soc. 84 (1978), 263272.CrossRefGoogle Scholar
(29)Youngson, M. A., Hermitian Operators on Banach Jordan algebras, Proc. Edin. Math. Soc. 22 (1979), 169180.CrossRefGoogle Scholar
(30)Youngson, M. A., Equivalent norms on Banach Jordan algebras, Math. Proc. Camb. Phil. Soc. 86 (1979), 261269.CrossRefGoogle Scholar