
doi: 10.1155/2011/969276
In this paper, we discuss the properties of the neutral operator (Ax)(t) = x(t) − cx(t − δ(t)), and by applying coincidence degree theory and fixed point index theory, we obtain sufficient conditions for the existence, multiplicity, and nonexistence of (positive) periodic solutions to two kinds of second‐order differential equations with the prescribed neutral operator.
Applications of operator theory to differential and integral equations, QA1-939, Mathematics, Neutral functional-differential equations, Periodic solutions to functional-differential equations, neutral equations
Applications of operator theory to differential and integral equations, QA1-939, Mathematics, Neutral functional-differential equations, Periodic solutions to functional-differential equations, neutral equations
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