σ-局部有限集族与度量空间的σ-映象

σ-Locally finite family of sets and σ-images of metric spaces

利用σ-映射建立了具有σ-局部有限cs-网、σ-局部有限cs*-网、σ-局部有限序列邻域网、σ-局部有限序列开网的空间与度量空间确定的σ-映象之间的联系.

The relation between the σ-images of metrizable spaces and spaces with σ-locally finite cs-network, or spaces with σ-locally finite cs-network, or spaces with σ-sequential neighborthood network, or spaces with σ-locally finite sequential open network are established by use of σ-mapping.