Hostname: page-component-76fb5796d-25wd4 Total loading time: 0 Render date: 2024-04-25T21:52:40.580Z Has data issue: false hasContentIssue false

INEQUALITIES OF JENSEN’S TYPE FOR POSITIVE LINEAR FUNCTIONALS ON HERMITIAN UNITAL BANACH $\ast$-ALGEBRAS

Published online by Cambridge University Press:  08 January 2020

S. S. DRAGOMIR*
Affiliation:
Mathematics, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne City, MC 8001, Australia DST-NRF Centre of Excellence in the Mathematical and Statistical Sciences, School of Computer Science and Applied Mathematics, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa email sever.dragomir@vu.edu.au

Abstract

We establish inequalities of Jensen’s and Slater’s type in the general setting of a Hermitian unital Banach $\ast$-algebra, analytic convex functions and positive normalised linear functionals.

Type
Research Article
Copyright
© 2020 Australian Mathematical Publishing Association Inc.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bonsall, F. F. and Duncan, J., Complete Normed Algebra (Springer, New York, 1973).CrossRefGoogle Scholar
Conway, J. B., A Course in Functional Analysis, 2nd edn (Springer, New York, 1990).Google Scholar
Dragomir, S. S., ‘Inequalities of McCarthy’s type in Hermitian unital Banach ∗-algebras’, RGMIA Res. Rep. Coll. 19 (2016), Article ID 171.Google Scholar
Dragomir, S. S., ‘Quadratic weighted geometric mean in Hermitian unital Banach ∗-algebras’, Oper. Matrices 12(4) (2018), 10091026.CrossRefGoogle Scholar
Feng, B. Q., ‘The geometric means in Banach ∗-algebra’, J. Operator Theory 57(2) (2007), 243250.Google Scholar
Okayasu, T., ‘The Löwner–Heinz inequality in Banach ∗-algebra’, Glasg. Math. J. 42 (2000), 243246.CrossRefGoogle Scholar
Shirali, S. and Ford, J. W. M., ‘Symmetry in complex involutory Banach algebras, II’, Duke Math. J. 37 (1970), 275280.CrossRefGoogle Scholar
Tanahashi, K. and Uchiyama, A., ‘The Furuta inequality in Banach ∗-algebras’, Proc. Amer. Math. Soc. 128 (2000), 16911695.CrossRefGoogle Scholar