Lanzara, Flavia:
Teoria degli operatori intermedi e applicazioni: risultati generali
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni Serie 9 3 (1992), fasc. n.2, p. 79-101, (Italian)
pdf (2.36 MB), djvu (492 Kb). | MR1170206 | Zbl 0777.47012
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Mediante l'uso della teoria dei problemi intermedi vengono dati metodi di calcolo per gli operatori di Green e per le relative funzioni di Green di problemi del tipo: data \( f \in S \), determinare \( u \in H \) tale che \( (T u,v)_{H} = (f,v)_{S}\), \( \forall v \in H \), dove \( S \) ed \( H \) sono spazi di Hilbert, \( H \subset S \), \( T \) è un operatore lineare da \( H \) in \( H \) che verifica opportune ipotesi. Si ottengono maggiorazioni esplicite «a priori», tanto prossime a quella ottimale quanto si vuole.
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