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Currently displaying 1 – 6 of 6

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$π$ -mappings in $l s$ -Ponomarev-systems

Nguyen Van Dung — 2011

Archivum Mathematicum

We use the $l s$ -Ponomarev-system $(f, M, X, {𝒫_{λ, n}})$ , where $M$ is a locally separable metric space, to give a consistent method to construct a $π$ -mapping (compact mapping) with covering-properties from a locally separable metric space $M$ onto a space $X$ . As applications of these results, we systematically get characterizations of certain $π$ -images (compact images) of locally separable metric spaces.

On Sequence-covering mssc-images of Locally Separable Metric Spaces

Nguyen Van Dung — 2010

Publications de l'Institut Mathématique

On sequence-covering $π$ - $s$ -images of locally separable metric spaces

Nguyen Van Dung — 2009

Matematički Vesnik

Fixed point theorems on S-metric spaces

Shaban Sedghi; Nguyen Van Dung — 2014

Matematički Vesnik

On pseudo-sequence-covering $π$ -images of locally separable metric spaces.

Dung, Nguyen Van — 2008

Acta Mathematica Universitatis Comenianae. New Series

On $π$ -images of locally separable metric spaces.

Van An, Tran; Van Dung, Nguyen — 2008

International Journal of Mathematics and Mathematical Sciences

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