Studies on Neumann-type boundary value problems for second-order nonlinear p-Laplacian-like functional differential equations☆

Abstract New sufficient conditions for the existence of at least one solution of Neumann-type boundary value problems for the second-order nonlinear differential equations { ( p ( t ) ϕ ( x ′ ( t ) ) ) ′ = f ( t , x ( t ) , x ( τ 1 ( t ) ) , … , x ( τ m ( t ) ) ) , t ∈ [ 0 , T ] , x ′ ( 0 ) = N , x ′ ( T ) = M , are established.