 1298 S. Malek
 On complex singularity analysis for linear partial qdifferencedifferential equations using nonlinear differential equations
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Aug 27, 12

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Abstract. We investigate the existence of local holomorphic solutions of linear qdifferencedifferential equations in two variables whose coefficients have poles or algebraic branch points singularities in one variable. These solutions are shown to develop poles or algebraic branch points along half qspirals. We also give bounds for the rate of growth of the solutions near the singular points. We construct these solutions with the help of functions of infinitely many variables that satisfy functional equations that involve qdifference, partial derivatives and shift operators. We show that these functional equations have solutions in some Banach spaces of holomorphic functions in infinitely many variables having subexponential growth.
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