An example of nonlinear -difference equation
Frédéric Menous (2004)
Annales de la Faculté des sciences de Toulouse : Mathématiques
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Frédéric Menous (2004)
Annales de la Faculté des sciences de Toulouse : Mathématiques
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Monique Hakim (1994)
Publicacions Matemàtiques
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Let F be a germ of analytic transformation of (C, 0). We say that F is semi-attractive at the origin, if F' has one eigenvalue equal to 1 and if the other ones are of modulus strictly less than 1. The main result is: either there exists a curve of fixed points, or F - Id has multiplicity k and there exists a domain of attraction with k - 1 petals. We also study the case where F is a global isomorphism of C and F - Id has multiplicity k at the origin. This work has been inspired by two...
G.K Immink (2008)
Annales de la faculté des sciences de Toulouse Mathématiques
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We study a class of nonlinear difference equations admitting a -Gevrey formal power series solution which, in general, is not - (or Borel-) summable. Using right inverses of an associated difference operator on Banach spaces of so-called , we prove that this formal solution can be lifted to an analytic solution in a suitable domain of the complex plane and show that this analytic solution is an of the formal power series.
Jean-Pierre Ramis, Yasutaka Sibuya (1994)
Annales de l'institut Fourier
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We give a new proof of multisummability of formal power series solutions of a non linear meromorphic differential equation. We use the recent Malgrange-Ramis definition of multisummability. The first proof of the main result is due to B. Braaksma. Our method of proof is very different: Braaksma used Écalle definition of multisummability and Laplace transform. Starting from a preliminary normal form of the differential equation the idea of our proof is to interpret...
Jack Diamond (1979)
Acta Arithmetica
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P. J. Grabner, H. Prodinger, R. F. Tichy (1993)
Journal de théorie des nombres de Bordeaux
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Flajolet and Richmond have invented a method to solve a large class of divide-and-conquer recursions. The essential part of it is the asymptotic analysis of a certain generating function for by means of the Mellin transform. In this paper this type of analysis is performed for a reasonably large class of generating functions fulfilling a functional equation with polynomial coefficients. As an application, the average life time of a party of people is computed, where each person advances...
P. Erdös, András Sárközy, E. Szemerédi (1966)
Acta Arithmetica
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