Abstract
In this paper, we are concerned with the oscillation of solutions to a class of fourth-order delay differential equations with p-Laplacian like operators ( r ( t ) vert x^{prime prime prime } ( t ) vert ^{p_{1}-2}x^{prime prime prime } ( t ) ) ^{prime }+q ( t ) vert x ( tau ( t ) ) vert ^{p_{2}-2}x ( tau ( t ) ) =0 and ( r ( t ) vert x^{prime prime prime } ( t ) vert ^{p_{1}-2}x^{prime prime prime } ( t ) ) ^{prime }+sigma ( t ) vert x^{prime prime prime } ( t ) vert ^{p_{1}-2}x^{ prime prime prime } ( t ) +q ( t ) vert x ( tau ( t ) ) vert ^{p_{2}-2}x ( tau ( t ) ) =0. New oscillation criteria are presented by the comparison technique and employing the Riccati transformation. Moreover, our results are an extension and complement to previous results in the literature. Two examples are shown to illustrate the conclusions.
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