Abstract
We consider equations involving the one-dimensional p-Laplacian
(vertical bar u'(t)vertical bar(p-2)u'(t)' + lambda f(u(t)) = 0, t is an element of (0, 1)
with the Dirichlet boundary conditions. By using time map methods, we show how changes of the sign of f(.) lead to multiple positive solutions of the problem for sufficiently large lambda.