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Some generalizations of the concept of a p-space

机译:p空间概念的一些概括

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In this article, some generalizations of the concept of a p-space are introduced and studied. The notion of a source of a space in a larger space and the concepts of partial plumage, s-embedding, p-embedding, p*-embedding, s-space, and p*-space are defined and studied in depth (see Theorems 2.6, 2.7, 3.2, 4.3, 4.4, 4.10 and their corollaries). An example of a hereditarily p*-space which is not a p-space and is a perfect image of a hereditarily p-space is indicated (Example 2.9). Among the main results, we establish that if a paracompact space X is p-embedded in a pseudocompact space as a dense subspace, then X is a p-space (Corollary 4.8), and that if X has a countable network and is p*-embedded in a pseudocompact space, then X is metrizable (Corollary 4.11). The following problem is posed: is every paracompact Gj-subspace of a pseudocompact space Cech-complete?
机译:在本文中,介绍并研究了p空间概念的一些概括。定义并深入研究了较大空间中空间源的概念以及部分羽状,s嵌入,p嵌入,p *嵌入,s空间和p *空间的概念(请参阅定理) 2.6、2.7、3.2、4.3、4.4、4.10及其推论)。给出了一个非p空间的遗传p *空间的示例,它是遗传p空间的完美图像(示例2.9)。在主要结果中,我们确定,如果超紧致空间X作为伪子空间以p形式嵌入到伪紧致空间中,则X为p空间(推论4.8),并且如果X具有可数网络并且为p * -嵌入到伪紧致空间中,则X是可度量的(推论4.11)。提出以下问题:伪紧致空间的每个超紧致Gj子空间Cech完全吗?

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