Schur's lemma and best constants in weighted norm inequalities
Strong forms of Schur's Lemma and its converse are proved for maps taking non-negative functions to non-negative functions and having formal adjoints. These results are applied to give best constants in a large class of weighted Lebesgue norm inequalities for non-negative integral operators. Si...
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| Format: | Article |
| Language: | English |
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Università degli Studi di Catania
2002-11-01
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| Series: | Le Matematiche |
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| Online Access: | http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/207 |