Covering $^\omega\omega$ by special Cantor sets
Gruenhage, Gary ; Levy, Ronnie
Commentationes Mathematicae Universitatis Carolinae, Tome 43 (2002), p. 497-509 / Harvested from Czech Digital Mathematics Library
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This paper deals with questions of how many compact subsets of certain kinds it takes to cover the space $^\omega \omega $ of irrationals, or certain of its subspaces. In particular, given $f\in {}^\omega (\omega \setminus \{0\})$, we consider compact sets of the form $\prod_{i\in \omega }B_i$, where $|B_i|= f(i)$ for all, or for infinitely many, $i$. We also consider ``$n$-splitting'' compact sets, i.e., compact sets $K$ such that for any $f\in K$ and $i\in \omega $, $|\{g(i):g\in K, g\restriction i=f\restriction i\}|= n$.

Publié le : 2002-01-01
Classification:  03E17,  03E35,  54A35 
@article{119339,
     author = {Gary Gruenhage and Ronnie Levy},
     title = {Covering $^\omega\omega$ by special Cantor sets},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {43},
     year = {2002},
     pages = {497-509},
     zbl = {1072.03028},
     mrnumber = {1920525},
     language = {en},
     url = {http://dml.mathdoc.fr/item/119339}
}

Gruenhage, Gary; Levy, Ronnie. Covering $^\omega\omega$ by special Cantor sets. Commentationes Mathematicae Universitatis Carolinae, Tome 43 (2002) pp. 497-509. http://gdmltest.u-ga.fr/item/119339/

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