Autor: Cannarsa, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Controllability of semilinear wave equations with infinitely iterated logarithms
Autorzy:: Cannarsa, P.
Komornik, V.
Loreti, P.
Powiązania:: https://bibliotekanauki.pl/articles/206588.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: controllability
semilinear equation
wave equation
Opis:: In a previous work we improved some earlier results of Imanuvilov, Li and Zhang, and of Zuazua, on the boundary exact controllability of semilinear wave equations by weakening the growth assumptions on the nonlinearity. Answering a question of Zuazua we give a still weaker, essentially optimal condition. Furthermore, we establish an approximate internal controllability result under the same growth assumptions.
Źródło:: Control and Cybernetics; 1999, 28, 3; 449-461
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Generation of analytic semi-groups in L² for a class of second order degenerate elliptic operators
Autorzy:: Cannarsa, P.
Rocchetti, D.
Vancostenoble, J.
Powiązania:: https://bibliotekanauki.pl/articles/970294.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: degenerate parabolic equation
weighted Sobolev spaces
normal trace theorem
Hardy type inequality
Opis:: We study the generation of analytic semigroups in the L² topology by second order elliptic operators in divergence form, that may degenerate at the boundary of the space domain. Our results, that hold in two space dimensions, guarantee that the solutions of the corresponding evolution problems support integration by parts. So, this paper provides the basis for deriving Carleman type estimates for degenerate parabolic operators.
Źródło:: Control and Cybernetics; 2008, 37, 4; 831-878
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja