Special almost P-spaces

Alessandro Fedeli

Commentationes Mathematicae Universitatis Carolinae (1997)

  • Volume: 38, Issue: 2, page 371-374
  • ISSN: 0010-2628

Abstract

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Motivated by some examples, we introduce the concept of special almost P-space and show, using the reflection principle, that for every space X of this kind the inequality “ | X | ≤ ψ c ( X ) t ( X ) " holds.

How to cite

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Fedeli, Alessandro. "Special almost P-spaces." Commentationes Mathematicae Universitatis Carolinae 38.2 (1997): 371-374. <http://eudml.org/doc/248112>.

@article{Fedeli1997,
abstract = {Motivated by some examples, we introduce the concept of special almost P-space and show, using the reflection principle, that for every space $X$ of this kind the inequality “$|X| \le \psi _\{c\}(X)^\{t(X)\}$" holds.},
author = {Fedeli, Alessandro},
journal = {Commentationes Mathematicae Universitatis Carolinae},
keywords = {cardinal function; almost P-space; cardinal function; almost P-space},
language = {eng},
number = {2},
pages = {371-374},
publisher = {Charles University in Prague, Faculty of Mathematics and Physics},
title = {Special almost P-spaces},
url = {http://eudml.org/doc/248112},
volume = {38},
year = {1997},
}

TY - JOUR
AU - Fedeli, Alessandro
TI - Special almost P-spaces
JO - Commentationes Mathematicae Universitatis Carolinae
PY - 1997
PB - Charles University in Prague, Faculty of Mathematics and Physics
VL - 38
IS - 2
SP - 371
EP - 374
AB - Motivated by some examples, we introduce the concept of special almost P-space and show, using the reflection principle, that for every space $X$ of this kind the inequality “$|X| \le \psi _{c}(X)^{t(X)}$" holds.
LA - eng
KW - cardinal function; almost P-space; cardinal function; almost P-space
UR - http://eudml.org/doc/248112
ER -

References

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  10. Watson S., The Lindelöf number of a power; an introduction to the use of elementary submodels in general topology, Topology Appl. 58 (1994), 25-342. (1994) Zbl0836.54004MR1280708

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