... infn→∞Jλ(un)=αλ,Hsu Boundary Value Problems 2011, 2011:37http://www.boundaryvalueproblems.com/content/2011/1/37Page 8 of 15RESEARC H Open AccessMultiple positive solutions for a class of quasi-linear ... a solution of (1.1) ifJλ(u), v =0 for allv ∈ D1,p0()and a solution of (1.1) is a critical point of Jl.Hsu Boundary Value Problems 2011, 2011:37http://www.boundaryvalueproblems.com/content/2011/1/37© ... =Nb(μ),Hsu Boundary Value Problems 2011, 2011:37http://www.boundaryvalueproblems.com/content/2011/1/37Page 11 of 1511. Wang, L, Wei, Q, Kang, D: Multiple positive solutions for p-Laplace...