Precedenti risultati riguardanti il principio di massimo generalizzato e la valutazione del primo autovalore per operatori uniformemente ellittici di tipo variazionale vengono estesi agli operatori subellittici di tipo Heisenberg non simmetrici e a coefficienti discontinui.
@article{BUMI_2001_8_4B_2_441_0,
author = {M. Chicco and M. R. Lancia},
title = {Generalized maximum principle and evaluation of the first eigenvalue for Heisenberg-type operators with discontinuous coefficients},
journal = {Bollettino dell'Unione Matematica Italiana},
volume = {4-A},
year = {2001},
pages = {441-456},
zbl = {1164.35328},
mrnumber = {1831998},
language = {en},
url = {http://dml.mathdoc.fr/item/BUMI_2001_8_4B_2_441_0}
}
Chicco, M.; Lancia, M. R. Generalized maximum principle and evaluation of the first eigenvalue for Heisenberg-type operators with discontinuous coefficients. Bollettino dell'Unione Matematica Italiana, Tome 4-A (2001) pp. 441-456. http://gdmltest.u-ga.fr/item/BUMI_2001_8_4B_2_441_0/
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