Abstract
Wc study dic exisience of positive radial solutions of 11 2u=g(jxi)f(u) in an annulus with Dirichlet boundary conditions. We establish ibat te equation has at least one positive radially syrnrnetric solution on any an- nulus iff and g are nonnegative, g~0 andfis superlinear at zero and + ~. Wc also give a property of positive radial solutions.
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