Oscillation of higher-order differential equations with distributed delay

This paper deals with the oscillation properties of higher-order nonlinear differential equations with distributed delay [ b ( ) ( y( n-1 ) ( ) ) γ ] ^+ ∫cᵈq ( , ξ ) yγ ( g ( , ξ ) ) \,d ( ξ ) =0, ≥₀, under the condition ∫_₀∞1b1/γ ( ) \,d< ∞. We obtain new oscillation criteria by employing a refinement of the generalized Riccati transformations and new comparison principles. We provide some examples to illustrate the main results.