Closed graph multi-selections

• Autorzy: Valentin Gutev
• Języki publikacji: EN

Abstrakty

EN

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.

Kategorie tematyczne

• 54C60: Set-valued maps
• 54C65: Selections

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Fundamenta Mathematicae
• Rocznik: 2011
• Tom: 211
• Numer: 1
• Strony: 85-99

Daty

wydano

2011

Twórcy

autor

Valentin Gutev

• School of Mathematical Sciences, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa

Identyfikatory

DOI

10.4064/fm211-1-5