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DOI: 10.23671/VNC.2018.2.14725 Characterizations of Finite Dimensional Archimedean Vector Lattices
Abstract:
In this paper, we give some necessary and sufficient conditions for an Archimedean vector lattice \(A\) to be of finite dimension. In this context, we give three characterizations. The first one contains the relation between the vector lattice \(A\) to be of finite dimension and its universal completion \(A^u\). The second one shows that the vector lattice \(A\) is of finite dimension if and only if one of the following two equivalent conditions holds : (a) every maximal modular algebra ideal in \(A^u\) is relatively uniformly complete or (b) \(Orth(A,A^u)=Z(A,A^u)\) where \(Orth(A,A^u)\) and \(Z(A,A^u)\) denote the vector lattice of all orthomorphisms from \(A\) to \(A^u\) and the sublattice consisting of orthomorphisms \(\pi\) with \(|\pi(x)|\leq\lambda|x|\) \((x\in A)\) for some \(0\leq\lambda\in\mathbb{R}\), respectively. It is well-known that any universally complete vector lattice \(A\) is of the form \(C^\infty (X)\) for some Hausdorff extremally disconnected compact topological space \(X\). The point \(x\in X\) is called \(\sigma\)- isolated if the intersection of every sequence of neighborhoods of \(x\) is a neighborhood of \(x\). The last characterization of finite dimensional Archimedean vector lattices is the following. Let \(A\) be a vector lattice and let \(A^{u}(=C^{\infty}\left(X\right))\) be its universal completion. Then \(A\) is of finite dimension if and only if each element of \(X\) is \(\sigma\)-isolated. Bresar in \cite{4} raised a question to find new examples of zero product determined algebras. Finally, as an application, we give a positive answer to this question.
Keywords: hyper-Archimedean vector lattice, \(f\)-algebra, universally complete vector lattice
Language: English
For citation: Polat F., Toumi M. A. Characterizations of Finite Dimensional
Archimedean Vector Lattices. Vladikavkazskij matematicheskij zhurnal
[Vladikavkaz Math. J.], vol. 20, no. 2, pp. 86-94.
DOI 10.23671/VNC.2018.2.14725
The sole copyright holder of the published work is the Founder of the Vladikavkaz Mathematical Journal. The terms of use of this work are governed by an open license (Creative Commons Attribution-NonCommercial 4.0 International). The use of metadata of the scientific article, including the title, abstract, author information, references, identifiers, and other bibliographic description elements for subsequent unrestricted use, is carried out under the terms of the CC BY or CC0 open licenses. ← Contents of issue |
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