Some new cardinal inequalities involving a cardinal function less than the spread and the density

Shu Hao Sun; Koo Guan Choo

Commentationes Mathematicae Universitatis Carolinae (1990)

  • Volume: 031, Issue: 2, page 395-401
  • ISSN: 0010-2628

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Sun, Shu Hao, and Choo, Koo Guan. "Some new cardinal inequalities involving a cardinal function less than the spread and the density." Commentationes Mathematicae Universitatis Carolinae 031.2 (1990): 395-401. <http://eudml.org/doc/17858>.

@article{Sun1990,
author = {Sun, Shu Hao, Choo, Koo Guan},
journal = {Commentationes Mathematicae Universitatis Carolinae},
keywords = {strong k-quasi-dense set; weight; pseudocharacter; cellularity; spread; density; cardinal inequalities},
language = {eng},
number = {2},
pages = {395-401},
publisher = {Charles University in Prague, Faculty of Mathematics and Physics},
title = {Some new cardinal inequalities involving a cardinal function less than the spread and the density},
url = {http://eudml.org/doc/17858},
volume = {031},
year = {1990},
}

TY - JOUR
AU - Sun, Shu Hao
AU - Choo, Koo Guan
TI - Some new cardinal inequalities involving a cardinal function less than the spread and the density
JO - Commentationes Mathematicae Universitatis Carolinae
PY - 1990
PB - Charles University in Prague, Faculty of Mathematics and Physics
VL - 031
IS - 2
SP - 395
EP - 401
LA - eng
KW - strong k-quasi-dense set; weight; pseudocharacter; cellularity; spread; density; cardinal inequalities
UR - http://eudml.org/doc/17858
ER -

References

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  1. R. Engelking, General Topology, PWN, Warszawa, 1977. (1977) Zbl0373.54002MR0500780
  2. R. E. Hodel, Cardinal functions I, Handbook of Set-Theoretic Topology (K. Kunen and J. E. Vaughan, eds.), North-Holland, 1984, 1-61. (1984) Zbl0559.54003MR0776620
  3. I. Juhasz, Cardinal functions in topology - ten years later, Math. Centrum, Amsterdam, 1980. (1980) Zbl0479.54001MR0576927
  4. X. S. Liu, Two topological cardinal functions, (in Chinese), Acta Math. Sinica 29 (1987), 494-497. (1987) MR0867698
  5. S. H. Sun, Two new topological cardinal inequalities, Proc. Amer. Math. Soc. 104 (1988), 313-316. (1988) Zbl0669.54002MR0958090
  6. S. H. Liu Y. M. Wang, A strengthened topological cardinal inequality, Bull Aust. Math. Soc. 32 (1985), 375-378. (1985) MR0819569

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