Baiocchi, Claudio and Komornik, Vilmos and Loreti, Paola:
Ingham type theorems and applications to control theory
Bollettino dell'Unione Matematica Italiana Serie 8 2-B (1999), fasc. n.1, p. 33-63, Unione Matematica Italiana (English)
pdf (318 Kb), djvu (333 Kb). | MR1794544 | Zbl 0924.42022
Sunto
Ingham [6] ha migliorato un risultato precedente di Wiener [23] sulle serie di Fourier non armoniche. Modificando la sua funzione di peso noi otteniamo risultati ottimali, migliorando precedenti teoremi di Kahane [9], Castro e Zuazua [3], Jaffard, Tucsnak e Zuazua [7] e di Ullrich [21]. Applichiamo poi questi risultati a problemi di osservabilità simultanea.
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Con il contributo del Ministero per i Beni e le Attività Culturali