Some old and new results on lower semico
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Szymon Dolecki; Badia El Ghali
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Article
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2000
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Elsevier Science
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English
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2 We shall comment later on the validity of the presented results in a broader context. 3 We have also, (A i ) iโI lower converges to A if and only if for all x โ A, lim dist (x; A i ) = 0 (where dist (x; A) = inf aโA x -a ). 4 The name "persistance" has been also used in [6,7,14].