Displaying similar documents to “On multifunctions with closed graphs”

Closed graph multi-selections

Valentin Gutev (2011)

Fundamenta Mathematicae

Similarity:

A classical Lefschetz result about point-finite open covers of normal spaces is generalised by showing that every lower semi-continuous mapping from a normal space into the nonempty compact subsets of a metrizable space admits a closed graph multi-selection. Several applications are given as well.