Riesz completions, functional representations, and anti-lattices
Riesz completions, functional representations, and anti-lattices
复制标题
Riesz 补全、函数表示和反格
DOI:
10.1007/s11117-013-0240-x
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发表时间:
2014
期刊:
影响因子:
1
通讯作者:
O. Gaans
中科院分区:
文献类型:
--
作者:
A. Kalauch;Bas Lemmens;O. Gaans
We show that the Riesz completion of an Archimedean partially ordered vector space $$X$$ with unit can be represented as a norm dense Riesz subspace of the smallest functional representation of $$X.$$ This yields a convenient way to find the Riesz completion. To illustrate the method, the Riesz completions of spaces ordered by Lorentz cones, cones of symmetric positive semi-definite matrices, and polyhedral cones are determined. We use the representation to analyse the existence of non-trivial disjoint elements and link the absence of such elements to the notion of anti-lattice. One of the results is a geometric condition on the dual cone of a finite dimensional partially ordered vector space $$X$$ that ensures that $$X$$ is an anti-lattice.