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In this paper, we study the multiplicity of solutions with a prescribed L2-norm for a class of nonlinear Kirchhoff type problems in R3−(a+b∫R3|∇u|2)Δu−λu=|u|p−2u, where a,b>0 are constants, λ∈R, p∈(143,6). To get such solutions we look for critical points of the energy functional Ib(u)=a2∫R3|∇u|2+b4(∫R3|∇u|2)2−1p∫R3|u|p restricted on the following set Sr(c)={u∈Hr1(R3):‖u‖L2(R3)2=c}, c>0. For...
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