Dm. Cao et al., EXISTENCE AND UNIQUENESS RESULTS ON SINGLE-PEAKED SOLUTIONS OF A SEMILINEAR PROBLEM, Annales de l Institut Henri Poincare. Analyse non lineaire, 15(1), 1998, pp. 73-111
A one to one correspondence is established between the nondegenerate c
ritical points of Q(x) in Omega and single peaked solutions of the pro
blem -epsilon(2) Delta u + u = Q(x)u(p-1) in Omega u > 0 in Omega and
u = 0 on partial derivative Omega where Omega is a bounded domain, 2 <
p < (N + 2)/(N - 2), epsilon > 0, and Q(x) epsilon C(<(Omega)over bar
>) boolean AND C-2(Omega). In particular, we establish the uniqueness
of the least energy solution when Q(x) attains its maximum in <(Omega)
over bar> at only one nondegenerate critical point in Omega. (C) Elsev
ier, Paris.