Hostname: page-component-7479d7b7d-t6hkb Total loading time: 0 Render date: 2024-07-09T11:25:29.275Z Has data issue: false hasContentIssue false

Banach algebras of power series

Published online by Cambridge University Press:  09 April 2009

Richard J. Loy
Affiliation:
School of General Studies, Australian National University, Canberra
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.

Let C[[t]] denote the algebra of all formal power series over the complex field C in a commutative indeterminate t with the weak topology determined by the projections pj: Σαiti ↦αj. A subalgebra A of C[[t]] is a Banach algebra of power series if it contains the polynomials and is a Banach algebra under a norm such that the inclusion map AC[[t]] is continuous. Such algebras were first introduced in [13] when considering algebras with one generator, and studied, in a special case, in [23]. For a partial bibliography of their subsequent study and application see the references of [9] (note that the usage of the term Banach algebra of power series in [9] differs from that here), and also [2], [3], [11]. Indeed, an examination of their use in [11], under more general topological conditions than here, led the present author to the results of [14], [15], [16], [17].

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1974

References

[1]Allan, G. R., ‘Embedding the algebra of formal power series in a Banach algebra’, Proc. London Math. Soc. (3) 25 (1972), 329340.CrossRefGoogle Scholar
[2]Arens, Richard, ‘Inverse-producing extensions of normed algebras’, Trans. Amer. Math. Soc. 88 (1958), 536548.CrossRefGoogle Scholar
[3]Arens, Richard, ‘Extensions of Banach algebras’, Pac J. Math. 10 (1960), 116.CrossRefGoogle Scholar
[4]Crownover, Richard M., ‘Principal ideals which are maximal ideals in Banach algebras’, Studia Math. 33 (1969), 299304.CrossRefGoogle Scholar
[5]Crownover, Richard M., ‘One dimensional point derivation spaces in Banach algebras’, Studia Math. 35 (1970), 249259.CrossRefGoogle Scholar
[6]Gleason, Andrew M., ‘Finitely generated ideals in Banach algebras’, J. Math. Mech. 13 (1964), 125132.Google Scholar
[7]Grabiner, Sandy, Radical Banach algebras and formal power series’, Ph. D. thesis, (Harvard, 1967.)Google Scholar
[8]Grabiner, Sandy, ‘A formal power series operational calculus for quasinilpotent operators’, Duke Math. J. 38 (1971), 641658.CrossRefGoogle Scholar
[9]Grabiner, Sandy, ‘Weighted shifts and Banach algebras of power series, Preprint.Google Scholar
[10]Johnson, B. E., ‘Continuity of linear operators commuting with continuous linear operators’, Trans. Amer. Math. Soc. 128 (1967), 88102.CrossRefGoogle Scholar
[11]Johnson, B. E., ‘Continuity of derivations on commutative algebras’, Amer. J. Math. 91 (1969), 110.CrossRefGoogle Scholar
[12]Landau, E., Darstellung und Begründung einiger neuerer Egrebnisse der Funktiontheorie, (Berlin, Ed. 2, 1929).Google Scholar
[13]Lorch, E. R., ‘The structure of normed abelian rings’, Bull. Amer. Math. Soc. 50 (1944), 447463.CrossRefGoogle Scholar
[14]Loy, R. J., ‘Continuity of derivations on topological algebras of power series’, Bull. Austral. Math. Soc. 1 (1969), 419424.CrossRefGoogle Scholar
[15]Loy, R. J., ‘Uniqueness of the complete norm topology and continuity of derivations on Banach algebras’, Tokohu Math. J. 22 (1970), 371378.Google Scholar
[16]Loy, R. J., ‘Uniqueness of the Fréchet space topology on certain topological algebras’, Bull. Austral. Math. Soc. 4 (1971), 17.CrossRefGoogle Scholar
[17]Loy, R. J., ‘Local analytic structure in certain commutative topological algebras’, Bull. Austral. Math. 6 (1972), 161167.CrossRefGoogle Scholar
[18]Miller, J. B., Analytic structure and higher derivations on commutative Banach algebras’, Aequationes Math. 9 (1973), 171183.CrossRefGoogle Scholar
[19]Naimark, M. A., Normed rings. (Noordhoff, Gronigen, 1964).Google Scholar
[20]Nikol'skii, N. K., ‘Spectral synthesis for a shift operator and zeroes in certain classes of analytic functions smooth up to the boundary’, Soviet Math. Dokl. 11 (1970), 206209.Google Scholar
[21]Read, Thomas T., ‘Zeroes of infinite order in a Banach algebra’, Notices Amer. Math. Soc. 19 (1972), # 691–64–40.Google Scholar
[22]Sidney, S. J., ‘Properties of the sequence of closed powers of a maximal ideal in a sup-normalgebra’, Trans. Amer. Math. Soc. 131 (1968), 128148.CrossRefGoogle Scholar
[23]Šilov, G., ‘On normed rings possessing one generator’, Mat. Sbornik 21 (1947), 2547.Google Scholar
[24]Wermer, John, ‘On restrictions of operators’, Proc. Math. Soc. 4 (1953), 860865.CrossRefGoogle Scholar