What makes a space have large weight?

I. Juhász; Lajos Soukup; Z. Szentmiklóssy

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arXiv · math/9401203

What makes a space have large weight?

I. Juhász·Lajos Soukup·Z. Szentmiklóssy

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Abstract

We formulate several conditions (two of them are necessary and sufficient) which imply that a space of small character has large weight. In section 3 we construct a ZFC example of a first countable 0-dimensional space X of size 2^omega with w(X)=2^omega and nw(X)=omega, we show that CH implies the existence of a 0-dimensional space Y of size omega_1 with w(Y)=nw(Y)=omega_1 and chi(Y)=R(Y)=omega, and we prove that it is consistent that 2^omega is as large as you wish and there is a 0-dimensional space Z of size 2^omega such that w(Z)=nw(Z)=2^omega but chi(Z)=R(Z^omega)=omega.

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BibTeX RIS

I. Juhász, Lajos Soukup, Z. Szentmiklóssy. 1994-01-11. What makes a space have large weight?. https://arxiv.org/abs/math/9401203

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