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

Commentationes Mathematicae Universitatis Carolinae (1990)

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

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topSun, 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

top- R. Engelking, General Topology, PWN, Warszawa, 1977. (1977) Zbl0373.54002MR0500780
- 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
- I. Juhasz, Cardinal functions in topology - ten years later, Math. Centrum, Amsterdam, 1980. (1980) Zbl0479.54001MR0576927
- X. S. Liu, Two topological cardinal functions, (in Chinese), Acta Math. Sinica 29 (1987), 494-497. (1987) MR0867698
- S. H. Sun, Two new topological cardinal inequalities, Proc. Amer. Math. Soc. 104 (1988), 313-316. (1988) Zbl0669.54002MR0958090
- 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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