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Selections that characterize topological completeness

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van Mill J., Pelant J., Pol R.

Fundamenta Mathematicae

1996

tom 149

nr 2

127-141

We show that the assertions of some fundamental selection theorems for lower-semicontinuous maps with completely metrizable range and metrizable domain actually characterize topological completeness of the target space. We also show that certain natural restrictions on the class of the domains change this situation. The results provide in particular answers to questions asked by Engelking, Heath and Michael [3] and Gutev, Nedev, Pelant and Valov [5].

Ograniczanie wyników

1 Fundamenta Mathematicae

1 Pelant J.

1 Pol R.

1 van Mill J.

1 1996

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Selections that characterize topological completeness