Dimostriamo l'esistenza della soluzione globale per un sistema di equazioni delle onde con nonlinearità quadratica dipendente dalle variabili spazio-tempo. Come in [3] la tecnica è basata sulla trasformazione di Penrose.
@article{BUMI_2000_8_3B_1_135_0,
author = {Nickolay Tzvetkov},
title = {Remark on the null-condition for the nonlinear wave equation},
journal = {Bollettino dell'Unione Matematica Italiana},
volume = {3-A},
year = {2000},
pages = {135-145},
zbl = {0949.35090},
mrnumber = {1755705},
language = {en},
url = {http://dml.mathdoc.fr/item/BUMI_2000_8_3B_1_135_0}
}
Tzvetkov, Nickolay. Remark on the null-condition for the nonlinear wave equation. Bollettino dell'Unione Matematica Italiana, Tome 3-A (2000) pp. 135-145. http://gdmltest.u-ga.fr/item/BUMI_2000_8_3B_1_135_0/
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