Triple positive solution to the one-dimensional <var>p</var>-Laplacian equation
Xuemei Zhang
North China Electric Power University, Beijing, ChinaMeiqiang Feng
Beijing Institute of Technology, ChinaWeigao Ge
Beijing Institute of Technology, China
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Abstract
We obtain sufficient conditions for the existence of at least three positive solutions to the second-order nonlinear delay differential equation with one-dimensional p-Laplacian
(Φp(x'(t)))' + w(t) f(t, x(t), x(t − τ), x'(t)) = 0, t ∈ (0,1), τ > 0,
x(t) = 0, −τ ≤ t ≤ 0,
x(1) = 0,
where Φp(s) is the p-Laplacian operator, i.e., Φp(s) = |s|p−2s, p > 1, (Φp)−1 = Φq, 1/p + 1/q = 1. The arguments are based upon a new fixed point theorem in a cone introduced by Avery and Peterson.