STABILIZATION OF SOLUTIONS OF WEAKLY SINGULAR QUENCHING PROBLEMS

Citation
M. Fila et al., STABILIZATION OF SOLUTIONS OF WEAKLY SINGULAR QUENCHING PROBLEMS, Proceedings of the American Mathematical Society, 119(2), 1993, pp. 555-559
Citations number
11
Categorie Soggetti
Mathematics, General",Mathematics
ISSN journal
00029939
Volume
119
Issue
2
Year of publication
1993
Pages
555 - 559
Database
ISI
SICI code
0002-9939(1993)119:2<555:SOSOWS>2.0.ZU;2-8
Abstract
In this paper we prove that if 0 < beta < 1, D subset-of R(N) is bound ed, and lambda > 0, then every element of the omega-limit set of weak solutions of u(t) - DELTAu + lambdau(-beta)chi(u > 0) = 0 in D x [0, i nfinity), [GRAPHICS] is a weak stationary solution of this problem. A consequence of this is that if D is a ball, lambda is sufficiently sma ll, and u0 is a radial, then the set {(x, t)\u = 0} is a bounded subse t of D x [0, infinity).