1. On weak-open $\pi$-images of metric spaces Creator: Li, Zhaowen Format: bez média and svazek Type: model:article and TEXT Subject: weak-open mappings, $\pi$-mappings, $g$-developable spaces, Cauchy spaces, cs-covers, sn-covers, weak-developments, and point-star networks Language: English Description: In this paper, we give some characterizations of metric spaces under weak-open $\pi$-mappings, which prove that a space is $g$-developable (or Cauchy) if and only if it is a weak-open $\pi$-image of a metric space. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public