Research on Some Topics of Banach Spaces and Topological Vector Spaces in Harbin

1996 ◽  
pp. 205-218
Author(s):  
Congxin Wu
Keyword(s):  
Banach Spaces ◽  
Vector Spaces ◽  
Topological Vector Spaces

An Embedding Theorem for Separable Locally Convex Spaces

1971 ◽  
Vol 14 (1) ◽  
pp. 119-120 ◽  
Author(s):  
Robert H. Lohman
Keyword(s):  
Banach Space ◽  
Banach Spaces ◽  
Convex Space ◽  
Separable Banach Space ◽  
Locally Convex Space ◽  
Embedding Theorem ◽  
Vector Spaces ◽  
Locally Convex Spaces ◽  
Topological Vector Spaces ◽  
Locally Convex

A well-known embedding theorem of Banach and Mazur [1, p. 185] states that every separable Banach space is isometrically isomorphic to a subspace of C[0, 1], establishing C[0, 1] as a universal separable Banach space. The embedding theorem one encounters in a course in topological vector spaces states that every Hausdorff locally convex space (l.c.s.) is topologically isomorphic to a subspace of a product of Banach spaces.

scholarly journals Nonlinear variational inequalities on reflexive Banach spaces and topological vector spaces

2003 ◽  
Vol 2003 (4) ◽  
pp. 199-207 ◽  
Author(s):  
Zeqing Liu ◽  
Jeong Sheok Ume ◽  
Shin Min Kang
Keyword(s):  
Variational Inequalities ◽  
Banach Spaces ◽  
Vector Spaces ◽  
Reflexive Banach Spaces ◽  
Topological Vector Spaces

The purpose of this paper is to introduce and study a class of nonlinear variational inequalities in reflexive Banach spaces and topological vector spaces. Based on the KKM technique, the solvability of this kind of nonlinear variational inequalities is presented. The obtained results extend, improve, and unify the results due to Browder, Carbone, Siddiqi, Ansari, Kazmi, Verma, and others.

scholarly journals Order preserving functions on ordered topological vector spaces

1999 ◽  
Vol 60 (1) ◽  
pp. 55-65 ◽  
Author(s):  
J.C. Candeal ◽  
E. Induráin ◽  
G.B. Mehta
Keyword(s):  
Banach Spaces ◽  
Vector Spaces ◽  
Reflexive Banach Spaces ◽  
Representation Theorems ◽  
Mackey Topology ◽  
Topological Vector Spaces ◽  
Infinite Dimensional ◽  
Total Preorder

In this paper we prove the existence of continuous order preserving functions on ordered topological vector spaces in an infinite-dimensional setting. In a certain class of topological vector spaces we prove the existence of topologies for which every continuous total preorder has a continuous order preserving representation and show that the Mackey topology is the finest topology with this property. We also prove similar representation theorems for reflexive Banach spaces and for Banach spaces that may not have a pre-dual.

scholarly journals Internal functionals and bundle duals

1984 ◽  
Vol 7 (4) ◽  
pp. 689-695 ◽  
Author(s):  
Joseph W. Kitchen ◽  
David A. Robbins
Keyword(s):  
Banach Spaces ◽  
Vector Spaces ◽  
Topological Spaces ◽  
Topological Vector Spaces ◽  
The Given ◽  
Locally Convex

Ifπ:E→Xis a bundle of Banach spaces,Xcompact Hausdorff, a fibered spaceπ*:E*→Xcan be constructed whose stalks are the duals of the stalks of the given bundle and whose sections can be identified with the “functionals” studied by Seda in [1] and [2] or elements of the “internal dual”Mod(Γ(π),C(X))studied by Gierz in [3]. If the given bundle is separable and norm continuous, then the fibered spaceπ*:E*→Xis actually a full bundle of locally convex topological vector spaces (Theorem 3). In the second portion of the paper two results are stated, both of them corollaries of theorems by Gierz, concerning functionals for bundles of Banach spaces which arise, in turn, from “fields of topological spaces.”

scholarly journals S-Barrelled Topological Vector Spaces*

1978 ◽  
Vol 21 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Ray F. Snipes
Keyword(s):  
Banach Spaces ◽  
Vector Spaces ◽  
Fréchet Spaces ◽  
Topological Vector Spaces ◽  
Barrelled Spaces ◽  
Steinhaus Theorem ◽  
Locally Convex

N. Bourbaki [1] was the first to introduce the class of locally convex topological vector spaces called “espaces tonnelés” or “barrelled spaces.” These spaces have some of the important properties of Banach spaces and Fréchet spaces. Indeed, a generalized Banach-Steinhaus theorem is valid for them, although barrelled spaces are not necessarily metrizable. Extensive accounts of the properties of barrelled locally convex topological vector spaces are found in [5] and [8].

Multivalued Usco Functions and Stegall Spaces

2018 ◽  
Vol 22 (1) ◽  
Author(s):  
Diana Ximena Narváez
Keyword(s):  
Banach Spaces ◽  
Convex Functions ◽  
Special Class ◽  
Vector Spaces ◽  
General Context ◽  
Classical Literature ◽  
Huge Number ◽  
Topological Vector Spaces ◽  
Asplund Spaces ◽  
Multivalued Functions

In this article we consider the study of the -differentiability and -ifferentiability for convex functions, not only in the general context of topological vector spaces (), but also in the context of Banach spaces. We study a special class of Banach spaces named Stegall spaces, denoted by , which is located between the Asplund -spaces and Asplund -spaces (-Asplund). We present a self-contained proof of the Stegall theorem, without appealing to the huge number of references required in some proofs available in the classical literature (4). This requires a thorough study of a very special type of multivalued functions between Banach spaces known as usco multi-functions.

scholarly journals Linearization of certain uniform homeomorphisms

2007 ◽  
Vol 82 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Anthony Weston
Keyword(s):  
Banach Space ◽  
Vector Space ◽  
Banach Spaces ◽  
Topological Vector Space ◽  
Vector Spaces ◽  
Topological Vector Spaces ◽  
Infinite Dimensional

AbstractThis article concerns the uniform classification of infinite dimensional real topological vector spaces. We examine a recently isolated linearization procedure for uniform homeomorphisms of the form φ: X →Y, where X is a Banach space with non-trivial type and Y is any topological vector space. For such a uniform homeomorphism φ, we show that Y must be normable and have the same supremal type as X. That Y is normable generalizes theorems of Bessaga and Enflo. This aspect of the theory determines new examples of uniform non-equivalence. That supremal type is a uniform invariant for Banach spaces is essentially due to Ribe. Our linearization approach gives an interesting new proof of Ribe's result.

T-Orthogonality and Nonlinear Functionals on Topological Vector Spaces

1973 ◽  
Vol 25 (6) ◽  
pp. 1121-1131 ◽  
Author(s):  
K. Sundaresan ◽  
O. P. Kapoor
Keyword(s):  
Banach Space ◽  
Banach Spaces ◽  
Orthogonality Relation ◽  
Vector Spaces ◽  
Topological Vector Spaces ◽  
Nonlinear Functionals

In recent years the problem of concretely representing a class of nonlinear functionals on Banach spaces has received considerable attention. Suppose B is a Banach space equipped with an orthogonality relation ⊥ ⊂ B X B.

Open decompositions on ordered convex spaces

1973 ◽  
Vol 74 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Yau-Chuen Wong
Keyword(s):  
Vector Space ◽  
Banach Spaces ◽  
Convex Space ◽  
Locally Convex Space ◽  
Positive Cone ◽  
Vector Spaces ◽  
Topological Vector Spaces ◽  
Closed Cone ◽  
Necessary And Sufficient ◽  
Locally Convex

Let (E, ) be a topological vector space with a positive cone C. Jameson (3) says that C given an open decomposition on E if V ∩ C − V ∩ C is a -neighbourhood of 0 whenever V is a -neighbourhood of 0. The concept of open decompositions plays an important rôle in the theory of ordered topological vector spaces; see (3). It is clear that C is generating if C gives an open decomposition on E; the converse is true for Banach spaces with a closed cone, by Andô's theorem (cf. (1) or (9)). Therefore the following question arises naturally:(Q 1) Let (E, ) be a locally convex space with a positive cone C. What condition on is necessary and sufficient for the cone C to give an open decomposition on E?

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