Cardinal invariants ${frak p}$, ${frak t}$ and ${frak h}$ and real functions

In: Tatra Mountains Mathematical Publications, vol. 28, no. 1

Michal Machura

Detaily:

Rok, strany: 2004, 97 - 108

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O článku:

A partial order on a family of continuous functions from a topological space $X$ into $[ω]^ω$ is defined as follows

$$ f subseteq^* g iff f(x) subseteq^*g (x) for any xin X. $$

For this order variants of cardinals ${frak p}$, ${frak t}$ and ${frak h}$ are defined and their values are estimated.

Ako citovať:

ISO 690:

Machura, M. 2004. Cardinal invariants ${frak p}$, ${frak t}$ and ${frak h}$ and real functions. In Tatra Mountains Mathematical Publications, vol. 28, no.1, pp. 97-108. 1210-3195.

APA:

Machura, M. (2004). Cardinal invariants ${frak p}$, ${frak t}$ and ${frak h}$ and real functions. Tatra Mountains Mathematical Publications, 28(1), 97-108. 1210-3195.