The B-topology on S∗-doubly quasicontinuous posets

The notions of os{o}_{s}-convergence and S∗{S}^{\ast }-doubly quasicontinuous posets are introduced, which can be viewed as common generalizations of Birkhoff’s order-convergence and S∗{S}^{\ast }-doubly continuous posets, respectively. We first consider the relationship between os{o}_{s}-convergenc...

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Bibliographic Details
Main Authors: Sun Tao, Li Qingguo, Zou Zhiwei
Format: article
Language:EN
Published: De Gruyter 2021
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Online Access:https://doaj.org/article/cf90c26e11864a3ea26f88f36761833e
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Summary:The notions of os{o}_{s}-convergence and S∗{S}^{\ast }-doubly quasicontinuous posets are introduced, which can be viewed as common generalizations of Birkhoff’s order-convergence and S∗{S}^{\ast }-doubly continuous posets, respectively. We first consider the relationship between os{o}_{s}-convergence and B-topology and show that the topology induced by os{o}_{s}-convergence according to the standard topological approach is the B-topology precisely. Then, the topological characterization for the S∗{S}^{\ast }-doubly quasicontinuity is presented. It is proved that a poset is S∗{S}^{\ast }-doubly quasicontinuous iff the poset equipped with the B-topology is locally hyperclosed iff the lattice of all B-open subsets of the poset is hypercontinuous. Finally, the order theoretical condition for the os{o}_{s}-convergence being topological is given and the complete regularity of B-topology on S∗{S}^{\ast }-doubly quasicontinuous posets is explored.