More topological cardinal inequalities

• Autorzy: O. T. Alas
• Języki publikacji: EN

Abstrakty

EN

A new topological cardinal invariant is defined; it may be considered as a weaker form of the Lindelöf degree.

Słowa kluczowe

EN

topological cardinal invariant   cardinal inequality   weak Lindelöf degree  

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Colloquium Mathematicum
• Rocznik: 1993
• Tom: 65
• Numer: 2
• Strony: 165-168

Daty

wydano

1993

otrzymano

1992-05-13

Twórcy

autor

O. T. Alas

• Instituto de Matemática e Estatística, Universidade de São Paulo, São Paulo, Brazil

Bibliografia

• [1] M. Bell, J. Ginsburg and G. Woods, Cardinal inequalities for topological spaces involving the weak Lindelöf number, Pacific J. Math. 79 (1978), 37-45.
• [2] A. Bella and F. Cammaroto, On the cardinality of Urysohn spaces, Canad. Math. Bull. 31 (1988), 153-158.
• [3] I. Juhász, Cardinal Functions in Topology--Ten Years Later, Math. Centre Tracts 123, Amsterdam 1983.