### Abstract

*sqL(X)*, which is less than both the spread and the density, is investigated in some details. We prove that, in several known inequalities involving the spread

*s(X)*, the spread

*s(X)*can be replaced by

*sqL(X)*. A related cardinal function, denoted by

*qL(X)*, is also discussed.

Original language | English |
---|---|

Pages (from-to) | 395-401 |

Number of pages | 7 |

Journal | Commentationes Mathematicae Universitatis Carolinae |

Volume | 31 |

Issue number | 2 |

Publication status | Published - 1990 |

Externally published | Yes |

### Cite this

*Commentationes Mathematicae Universitatis Carolinae*,

*31*(2), 395-401.

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*Commentationes Mathematicae Universitatis Carolinae*, vol. 31, no. 2, pp. 395-401.

**Some new cardinal inequalities involving a cardinal function less than the spread and the density.** / Sun, Shuhao; Choo, Koo-Guan.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Some new cardinal inequalities involving a cardinal function less than the spread and the density

AU - Sun, Shuhao

AU - Choo, Koo-Guan

PY - 1990

Y1 - 1990

N2 - In this paper, a cardinal function, denoted by sqL(X), which is less than both the spread and the density, is investigated in some details. We prove that, in several known inequalities involving the spread s(X), the spread s(X) can be replaced by sqL(X). A related cardinal function, denoted by qL(X), is also discussed.

AB - In this paper, a cardinal function, denoted by sqL(X), which is less than both the spread and the density, is investigated in some details. We prove that, in several known inequalities involving the spread s(X), the spread s(X) can be replaced by sqL(X). A related cardinal function, denoted by qL(X), is also discussed.

M3 - Article

VL - 31

SP - 395

EP - 401

JO - Commentationes Mathematicae Universitatis Carolinae

JF - Commentationes Mathematicae Universitatis Carolinae

SN - 0010-2628

IS - 2

ER -