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This article is cited in 2 scientific papers (total in 2 papers)
On $p$-spaces and their continuous maps
N. V. Velichko
Abstract:
The following theorems are the main results of this paper.
Theorem 1. Let $f\colon X\to Y$ be a closed mapping of the weakly paracompact $p$-space $X$. In order that the space $Y$ be weakly paracompact and plumed, it is necessary and sufficient that the mapping $f$ be peripherally bicompact.
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Theorem 2. {\it Let $f\colon X\to Y$ be a closed mapping of a weakly paracompact $p$-space $X$. Then $Y=Y_0\cup Y_1,$ where the set $Y_1$ is $\sigma$-discrete in $Y$ and the set $f^{-1}y$ is bicompact for each point $y\in Y_0$.}
An example is constructed of a weakly paracompact, locally compact, $\sigma$-paracompact space which is not normal and which cannot be mapped perfectly onto a space with a refining sequence of coverings.
Bibliography: 22 titles.
Received: 29.01.1972
Citation:
N. V. Velichko, “On $p$-spaces and their continuous maps”, Math. USSR-Sb., 19:1 (1973), 35–46
Linking options:
https://www.mathnet.ru/eng/sm2994https://doi.org/10.1070/SM1973v019n01ABEH001734 https://www.mathnet.ru/eng/sm/v132/i1/p34
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