On innerness of derivations on .
Displaying 21 – 40 of 70
On inverse-closed algebras of infinitely differentiable functions
Joaquim Bruna (1981)
Studia Mathematica
On joint spectra of operators on a Banach space isomorphic to its square
Andrzej Sołtysiak (1989)
Colloquium Mathematicae
On joint spectral radii in locally convex algebras
Andrzej Sołtysiak (2006)
Studia Mathematica
We present several notions of joint spectral radius of mutually commuting elements of a locally convex algebra and prove that all of them yield the same value in case the algebra is pseudo-complete. This generalizes a result proved by the author in 1993 for elements of a Banach algebra.
On Local Uniform Topological Algebras
Oukhouya, Ali (2006)
Serdica Mathematical Journal
2000 Mathematics Subject Classification: Primary 46H05, 46H20; Secondary 46M20.Every unital "combinatorially regular" commutative uniform complete locally m-convex algebra is local.
On locally bounded algebras
S. Rolewicz (2000)
Banach Center Publications
It is a survey talk concerning locally bounded algebras.
On locally m-convex algebras of type ES
Nguyen Van Khue (1987)
Colloquium Mathematicae
On locally pseudoconvexes square algebras.
Jorma Arhippainen (1995)
Publicacions Matemàtiques
Let A be an algebra over the field of complex numbers with a (Hausdorff) topology given by a family Q = {qλ|λ ∈ Λ} of square preserving rλ-homogeneous seminorms (rλ ∈ (0, 1]). We shall show that (A, T(Q)) is a locally m-convex algebra. Furthermore we shall show that A is commutative.
On Making Involutive vector spaces into Topological *-Algebras
Yannis Tsertos (2005)
Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
On multiplicative linear functionals
W. Żelazko (1973)
Colloquium Mathematicae
On permanently singular elements in commutative m-convex locally convex algebras
W. Żelazko (1971)
Studia Mathematica
On quasi-analytic vectors for some classes of operators
Istratescu, Vasile I., Constantin, Gheorghe (1983/1984)
Portugaliae mathematica
On quasi-multipliers
Ziya Argün, K. Rowlands (1994)
Studia Mathematica
On quasinilpotent equivalence of finite rank elements in Banach algebras
Heinrich Raubenheimer (2010)
Czechoslovak Mathematical Journal
We characterize elements in a semisimple Banach algebra which are quasinilpotent equivalent to maximal finite rank elements.
On quasipositive elements in ordered Banach algebras
Gerd Herzog, Roland Lemmert (1998)
Studia Mathematica
Let a real Banach algebra A with unit be ordered by an algebra cone K. We study the elements a ∈ A with exp(ta) ∈ K, t≥ 0.
On rank one and finite elements of Banach algebras
T. Mouton, H. Raubenheimer (1993)
Studia Mathematica
We give a spectral characterisation of rank one elements and of the socle of a semisimple Banach algebra.
On rank one elements
Robin Harte (1995)
Studia Mathematica
Without the "scarcity lemma", two kinds of "rank one elements" are identified in semisimple Banach algebras.
On regularities and Fredholm theory
L. Lindeboom, H. Raubenheimer (2002)
Czechoslovak Mathematical Journal
We investigate the relationship between the regularities and the Fredholm theory in a Banach algebra.
On some inequalities in normed algebras.
Dragomir, Sever S. (2008)
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
On Some Properties of Segal Algebras and Their Multipliers.
Bohdan J. Tomiuk (1979)
Manuscripta mathematica