Summary
We establish relationships between paracompact locally Lindelöf spaces and all kinds of spaces with <Emphasis Type=”Italic”>L</Emphasis>-systems by means of closed mappings, weakly perfect mappings and quotient mappings. In particular, we obtain some characterizations of paracompact locally Lindelöf spaces. Interestingly, they are also characterized as weakly perfect inverse images of locally separable metric spaces.
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Li, J. Paracompact locally Lindelöf spaces and <Emphasis Type=”Italic”>L</Emphasis>-systems. Acta Math Hung 107, 65–70 (2005). https://doi.org/10.1007/s10474-005-0178-y
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DOI: https://doi.org/10.1007/s10474-005-0178-y