caa a22 4500 467932166 CHVBK 20180406152946.0 cr unu---uuuuu 170328e20060301xx s 000 0 eng 10.1007/s00020-004-1357-x doi (NATIONALLICENCE)springer-10.1007/s00020-004-1357-x Mugnolo Delio Dipartimento di Matematica, Università degli Studi, Via Orabona 4, I-70125, Bari, Italy aut Operator Matrices as Generators of Cosine Operator Functions [Elektronische Daten] [Delio Mugnolo] Abstract.: We introduce an abstract setting that allows to discuss wave equations with time-dependent boundary conditions by means of operator matrices. We show that such problems are well-posed if and only if certain perturbations of the same problems with homogeneous, time-independent boundary conditions are well-posed. As applications we discuss two wave equations in Lp(0, 1) and in L2(Ω) equipped with dynamical and acoustic-like boundary conditions, respectively. Birkhäuser Verlag, Basel, 2006 Operator matrices nationallicence cosine operator functions nationallicence differential operators equipped with dynamical or generalized Wentzell boundary conditions nationallicence Integral Equations and Operator Theory Birkhäuser-Verlag; www.birkhauser.ch 54/3(2006-03-01), 441-464 0378-620X 54:3<441 2006 54 20 https://doi.org/10.1007/s00020-004-1357-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00020-004-1357-x text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mugnolo Delio Dipartimento di Matematica, Università degli Studi, Via Orabona 4, I-70125, Bari, Italy aut NATIONALLICENCE 773 0- Integral Equations and Operator Theory Birkhäuser-Verlag; www.birkhauser.ch 54/3(2006-03-01), 441-464 0378-620X 54:3<441 2006 54 20 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer