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Small scattered topological invariants

Journal: Matematychni Studii (Vol.39, No. 2)

Publication Date:

Authors : ; ;

Page : 212-222

Keywords : small transfinite inductive dimension; separation dimension; countable-dimensional spaces; $\sigma$-hereditarily disconnected spaces;

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Abstract

We present a unified approach to define {dimension functions like} $mathop{{rm trind}}$, $mathop{{rm trind}}_p$, $mathop{{rm trt}}$ and $mathop{{rm p}}$. We show how some similar facts on these functions can be proved similarly. Moreover, several new classes of infinite-dimensional spaces close to the classes of countable-dimensional and $sigma$-hereditarily disconnected ones are introduced. We prove a compactification theorem for these classes.

Last modified: 2014-01-13 20:09:36