Eigenvalues of Integral Operators. II.
Eine Charakterisierung der Boole'schen Algebra zu einer ...-direkten Zerlegung.
Entropy and Eigenvalues of Certain Integral Operators.
Entropy and n-widths of operators in Banach spaces
Entropy numbers of r-nuclear operators between spaces
Equivalences involving (p,q)-multi-norms
We consider (p,q)-multi-norms and standard t-multi-norms based on Banach spaces of the form , and resolve some question about the mutual equivalence of two such multi-norms. We introduce a new multi-norm, called the [p,q]-concave multi-norm, and relate it to the standard t-multi-norm.
Ergodic actions of compact groups on operator algebras. III. Classification for SU (2).
Erratum to “Can ever be amenable?” (Studia Math. 188 (2008), 151-174)
Estimating compactness properties of operators by the aid of generalized entropy numbers.
Finite representability and super-ideals of operators [Book]
First results on spectrally bounded operators
A linear mapping T from a subspace E of a Banach algebra into another Banach algebra is defined to be spectrally bounded if there is a constant M ≥ 0 such that r(Tx) ≤ Mr(x) for all x ∈ E, where r(·) denotes the spectral radius. We study some basic properties of this class of operators, which are sometimes analogous to, sometimes very different from, those of bounded operators between Banach spaces.
Generalized derivations and -algebras: comments and some open problems.
Generation of B(X) two commutative subalgebras - results and open problems
Homomorphisms on algebras of Lipschitz functions
We characterize a class of *-homomorphisms on Lip⁎(X,𝓑(𝓗 )), a non-commutative Banach *-algebra of Lipschitz functions on a compact metric space and with values in 𝓑(𝓗 ). We show that the zero map is the only multiplicative *-preserving linear functional on Lip⁎(X,𝓑(𝓗 )). We also establish the algebraic reflexivity property of a class of *-isomorphisms on Lip⁎(X,𝓑(𝓗 )).
Ideals in algebras of unbounded operators
Ideals of uniformly continuous mappings on pseudometric spaces
Idempotents of Fourier Multiplier Algebra.
Infinite-factorable holomorphic mappings on locally convex spaces.
Injektive Operatorenideale über der Gesamtheit aller Banachräume und ihre topologische Erzeugung
Inversion von Fredholmfunktionen bei stetiger und holomorpher Abhängigkeit von Parametern.