On spaces with mixed modulars and some spaces of temperate distributions
On Sparr and Fernandez's interpolation methods of Banach spaces.
On spectral continuity of positive elements
Let x be a positive element of an ordered Banach algebra. We prove a relationship between the spectra of x and of certain positive elements y for which either xy ≤ yx or yx ≤ xy. Furthermore, we show that the spectral radius is continuous at x, considered as an element of the set of all positive elements y ≥ x such that either xy ≤ yx or yx ≤ xy. We also show that the property ϱ(x + y) ≤ ϱ(x) + ϱ(y) of the spectral radius ϱ can be obtained for positive elements y which satisfy at least one of the...
On spectral distributions of definitizable operators in Krein space
On spectral homomorphisms and continuous functions of Banach algebra elements
On Split Faces and Function Algebras.
On splitting of extensions of rings and topological rings.
On spreading -sequences in Banach spaces
We introduce and study the spreading-(s) and the spreading-(u) property of a Banach space and their relations. A space has the spreading-(s) property if every normalized weakly null sequence has a subsequence with a spreading model equivalent to the usual basis of ; while it has the spreading-(u) property if every weak Cauchy and non-weakly convergent sequence has a convex block subsequence with a spreading model equivalent to the summing basis of . The main results proved are the following: (a)...
On spreading models in
On stability and growth of solutions for classes of initial and boundary value problems
On stability and robust stability of positive linear Volterra equations in Banach lattices
We study positive linear Volterra integro-differential equations in Banach lattices. A characterization of positive equations is given. Furthermore, an explicit spectral criterion for uniformly asymptotic stability of positive equations is presented. Finally, we deal with problems of robust stability of positive systems under structured perturbations. Some explicit stability bounds with respect to these perturbations are given.
On stability of classes of Lipschitz mappings generated by compact sets of linear mappings.
On stability of the Cauchy equation on semigroups.
On stability properties of positive contractions of L¹-spaces associated with finite von Neumann algebras
We extend the notion of Dobrushin coefficient of ergodicity to positive contractions defined on the L¹-space associated with a finite von Neumann algebra, and in terms of this coefficient we prove stability results for L¹-contractions.
On stabilization of functions and free boundary variational problems on unbounded intervals [Summary]
On Stefan Banach and some of his results.
On Stein manifolds M for which 0 (M) is somorphic to ... as Fréchet spaces.
On strictly convex and strictly 2-convex 2-normed spaces. II.
On strictly singular operators
On strong continuity of derivatives of mappings