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Unbounded order convergence and the Gordon theorem#
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Date
2019-01-01
Author
Gorokhova, S.G.
Kutateladze, S.S.
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The celebrated Gordon's theorem is a natural tool for dealing with universal completions of Archimedean vector lattices. Gordon's theorem allows us to clarify some recent results on unbounded order convergence. Applying the Gordon theorem, we demonstrate several facts on order convergence of sequences in Archimedean vector lattices. We present an elementary Boolean-Valued proof of the Gao-Grobler-Troitsky-Xanthos theorem saying that a sequence xn in an Archimedean vector lattice X is uo-null (uo-Cauchy) in X if and only if xn is o-null (o-convergent) in Xu. We also give elementary proof of the theorem, which is a result of contributions of several authors, saying that an Archimedean vector lattice is sequentially uo-complete if and only if it is σ-universally complete. Furthermore, we provide a comprehensive solution to Azouzi's problem on characterization of an Archimedean vector lattice in which every uo-Cauchy net is o-convergent in its universal completion.
Subject Keywords
Boolean valued analysis
,
Unbounded order convergence
,
Universally complete vector lattice
URI
https://hdl.handle.net/11511/94926
Journal
Vladikavkaz Mathematical Journal
DOI
https://doi.org/10.23671/vnc.2019.21.44624
Collections
Department of Mathematics, Article
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S. G. Gorokhova and S. S. Kutateladze, “Unbounded order convergence and the Gordon theorem#,”
Vladikavkaz Mathematical Journal
, vol. 21, no. 4, pp. 56–62, 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/94926.