Natural Boundaries for Solutions to a Certain Class of Functional Differential Equations |
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Authors: | JC MarshallB van Brunt GC Wake |
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Institution: | a Institute of Fundamental Sciences, Department of Mathematics, Massey University, Palmerston North, 11 222, New Zealandb Department of Mathematics and Statistics, The University of Canterbury, Christchurch, New Zealand |
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Abstract: | This paper is concerned with a generalization of a functional differential equation known as the pantograph equation. The pantograph equation contains a linear functional argument. In this paper we generalize this functional argument to include nonlinear polynomials. In contrast to the entire solutions generated by the pantograph equation for the retarded case, we show that in the nonlinear case natural boundaries occur. These boundaries are linked to the Julia set of the polynomial functional argument. |
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