Order-like structure of monotonically normal spaces
Commentationes Mathematicae Universitatis Carolinae, Tome 39 (1998) no. 1, pp. 207-217
Cet article a éte moissonné depuis la source Czech Digital Mathematics Library
For a compact monotonically normal space X we prove: \, (1) \, $X$ has a dense set of points with a well-ordered neighborhood base (and so $X$ is co-absolute with a compact orderable space); \, (2) \, each point of $X$ has a well-ordered neighborhood $\pi $-base (answering a question of Arhangel'skii); \, (3) \, $X$ is hereditarily paracompact iff $X$ has countable tightness. In the process we introduce weak-tightness, a notion key to the results above and yielding some cardinal function results on monotonically normal spaces.
For a compact monotonically normal space X we prove: \, (1) \, $X$ has a dense set of points with a well-ordered neighborhood base (and so $X$ is co-absolute with a compact orderable space); \, (2) \, each point of $X$ has a well-ordered neighborhood $\pi $-base (answering a question of Arhangel'skii); \, (3) \, $X$ is hereditarily paracompact iff $X$ has countable tightness. In the process we introduce weak-tightness, a notion key to the results above and yielding some cardinal function results on monotonically normal spaces.
Classification :
54D15, 54D30, 54F05
Keywords: monotonically normal; compactness; linear ordered spaces
Keywords: monotonically normal; compactness; linear ordered spaces
@article{CMUC_1998_39_1_a20,
author = {Williams, Scott W. and Zhou, Haoxuan},
title = {Order-like structure of monotonically normal spaces},
journal = {Commentationes Mathematicae Universitatis Carolinae},
pages = {207--217},
year = {1998},
volume = {39},
number = {1},
mrnumber = {1623026},
zbl = {0937.54012},
language = {en},
url = {http://geodesic.mathdoc.fr/item/CMUC_1998_39_1_a20/}
}
TY - JOUR AU - Williams, Scott W. AU - Zhou, Haoxuan TI - Order-like structure of monotonically normal spaces JO - Commentationes Mathematicae Universitatis Carolinae PY - 1998 SP - 207 EP - 217 VL - 39 IS - 1 UR - http://geodesic.mathdoc.fr/item/CMUC_1998_39_1_a20/ LA - en ID - CMUC_1998_39_1_a20 ER -
Williams, Scott W.; Zhou, Haoxuan. Order-like structure of monotonically normal spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 39 (1998) no. 1, pp. 207-217. http://geodesic.mathdoc.fr/item/CMUC_1998_39_1_a20/