Journal
JOURNAL OF DIFFERENTIAL EQUATIONS
Volume 221, Issue 1, Pages 158-189Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jde.2005.03.004
Keywords
layered solutions; Gierer-Meinhardt system; pattern fortnation; singular perturbations
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We consider the stationary Gierer-Meinhardt system in a ball of RN: [GRAPHICS] where Omega = B-R is a ball of R-N (N >= 2) with radius R, epsilon > 0 is a small parameter, and p, q, m, s satisfy the following condition: [GRAPHICS] We construct positive solutions which concentrate on a (N - 1)-dimensional sphere for this system for all sufficiently small E. More precisely, under some conditions on the exponents (p, q) and the radius R, it is proved the above problem has a radially symmetric positive solution (u(epsilon), v epsilon) with the property that u(epsilon)(r) -> 0 in Omega\{r not equal r(0)) for some r(0) epsilon (0, R). Existence of bound states in the whole RN is also established. (c) 2005 Elsevier Inc. All rights reserved.
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