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The spectrum problem for Abelian $$\ell $$ ℓ -groups and MV-algebras
Algebra universalis ( IF 0.6 ) Pub Date : 2020-07-06 , DOI: 10.1007/s00012-020-00668-4
Giacomo Lenzi , Antonio Di Nola

This paper deals with the problem of characterizing those topological spaces which are homeomorphic to the prime spectra of MV-algebras or Abelian \(\ell \)-groups. As a first main result, we show that a topological space X is the prime spectrum of an MV-algebra if and only if X is spectral, and the lattice K(X) of compact open subsets of X is a closed epimorphic image of the lattice of “cylinder rational polyhedra” (a natural generalization of rational polyhedra) of \([0,1]^Y\) for some set Y. As a second main result we extend our results to Abelian \(\ell \)-groups. That is, a topological space X is the prime spectrum of an Abelian \(\ell \)-group if and only if X is generalized spectral, and the lattice K(X) is a closed epimorphic image of the lattice of “cylinder rational cones” (a generalization of rational cones) in \({{\mathbb {R}}}^Y\) for some set Y. Finally, we axiomatize, in monadic second order logic, the Belluce lattices of free MV-algebras (equivalently, the lattice of cylinder rational polyhedra) of dimension 1, 2 and infinite, and we study the problem of describing Belluce lattices in certain fragments of second order logic.



中文翻译:

Abelian $$ \ ell $$ℓ-群和MV-代数的频谱问题

本文研究了表征那些与MV-代数或Abelian \(\ ell \) -群的素谱同胚的拓扑空间的问题。作为第一个主要结果,我们表明,当且仅当X是谱时,拓扑空间X是MV代数的素谱,并且X的紧凑开放子集的晶格KX)是X的闭胚形图像。对于某些集合 Y\([0,1] ^ Y \)的“圆柱有理多面体”(有理多面体的自然概括)的格。作为第二个主要结果,我们将结果扩展到Abelian \(\ ell \) -groups。也就是说,一个拓扑空间X是阿贝尔的主要光谱\(\ ELL \) -基团,当且仅当X是广义的光谱,晶格ķX)是“气缸理性锥体”晶格的闭合epimorphic图像(的一般化\({{\ mathbb {R}}} ^ Y \)中的某些集合Y的有理锥)。最后,我们用一阶二阶逻辑公理化维数为1、2和无穷大的自由MV-代数的Belluce格(等效地,圆柱有理多面体的格),并且研究了描述贝卢斯格的某些问题。二阶逻辑。

更新日期:2020-07-06
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