Results 51 to 60 of about 590,591 (97)

On the Krein-Šmulian theorem for weaker topologies

open access: yes, 2003
We investigate possible extensions of the classical KreinSmulian theorem to various weak topologies. In particular, if X is a WCG Banach space and τ is any locally convex topology weaker than the norm-topology, then for every τ -compact norm-bounded set ...
B. Cascales, R. Shvydkoy
semanticscholar   +1 more source

Different Types of Weighted Composition Operators on Banach Spaces of Analytic Functions [PDF]

open access: yes, 2023
Many problems in real life are, at least approximatively, of linear nature and can be mathematically examined with the aid of linear spaces. It is natural to measure the size of objects occurring in the problems and such an operation is called a norm. If
Norrbo, David
core  

The Kreĭn-Šmulian theorem

open access: yes, 1986
PROOF. Let {xi} be a dense subset of X. Suppose that d(x**, JX) = d > 0. By the Hahn-Banach theorem there is a norm one functional x*** satisfying x***(JX) =0 and x***(x**)= d. Let Wn = {z*: Iz*(xi)l d/2} n W,.
R. Whitley
semanticscholar   +1 more source

Convergence of an implicit–explicit midpoint scheme for computational micromagnetics [PDF]

open access: yes, 2017
Based on lowest-order finite elements in space, we consider the numerical integration of the Landau–Lifschitz–Gilbert equation (LLG). The dynamics of LLG is driven by the so-called effective field which usually consists of the exchange field, the ...
Abert   +37 more
core   +3 more sources

Separable subspaces of affine function spaces on convex compact sets [PDF]

open access: yes, 2008
Let K be a compact convex subset of a separated locally convex space (over R) and let Ap(K) denote the space of all continuous real-valued affine mappings defined on K, endowed with the topology of pointwise convergence on the extreme points of K.
Moors, Warren B.   +1 more
core   +1 more source

Representing groups against all odds [PDF]

open access: yes, 2017
We investigate how probability tools can be useful to study representations of non-amenable groups. A suitable notion of "probabilistic subgroup" is proposed for locally compact groups, and is valuable to induction of representations.
Gheysens, Maxime
core   +1 more source

Weakly almost periodic functions, model-theoretic stability, and minimality of topological groups [PDF]

open access: yes, 2013
We investigate the automorphism groups of $\aleph_0$-categorical structures and prove that they are exactly the Roelcke precompact Polish groups. We show that the theory of a structure is stable if and only if every Roelcke uniformly continuous function ...
Ben Yaacov, Itaï, Tsankov, Todor
core   +2 more sources

Commutative Banach algebras which satisfy a Bochner-Schoenberg-Eberlein type-theorem

open access: yes, 1990
A class of commutative Banach algebras which satisfy a Bochner- Schoenberg-Eberlein-type inequality is introduced. Commutative C*-algebras, the disk algebra and the Hardy algebra on the open disk are examples.
Sin-Ei Takahasi, O. Hatori
semanticscholar   +1 more source

On Projected Solutions for Quasi Equilibrium Problems with Non-self Constraint Map

open access: yes, 2023
In a normed space setting, this paper studies the conditions under which the projected solutions to a quasi equilibrium problem with non-self constraint map exist.
Bianchi, Monica   +2 more
core  

Separate control over the local and the asymptotic behaviour in L_p spaces [PDF]

open access: yes
We introduce 2 parameter variants L_{p,q} of the Lebesgue spaces, to gain separate control on the asymptotic behaviour (p) and the local behaviour (q). Thus they behave with respect to p like the spaces ell_p and with respect to q like the spaces L_q on ...
Mertens, Jean-Francois, Rubinchik, Anna
core  

Home - About - Disclaimer - Privacy