MATEMATIČKI VESNIK
МАТЕМАТИЧКИ ВЕСНИК



MATEMATIČKI VESNIK
A mapping theorem on $\aleph$-spaces
Zhaowen Li

Abstract

In this paper we give a mapping theorems on $\aleph$-spaces by means of strong compact-covering mappings and $\sigma$-mappings. As an application, we get characterizations of quotient (pseudo-open) $\sigma$-images of metric spaces.

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Keywords: $\aleph$-spaces; strong compact-covering mappings; $\sigma$-mappings; $k$-spaces; Fréchet spaces.

MSC: 54E99, 54C10

Pages:  35--40     

Volume  57 ,  Issue  1$-$2 ,  2005