Abstract
In chapter 6, we have studied formal solutions of a class (6.3.1) of non linear singular partial differential equations of order l and we have proved that each formal power series solution is in some formal Gevrey class ε{s} for s = s l . The number s l can be computed explicitly by looking at the coefficients of (6.3.1). Moreover, each formal solution û of the equation (6.3.1) is in some formal Gevrey class ε{s} for s = s l (û) ≤ s l and s l (û) can be calculated explicitly. We showed also in [19] (see also section 6.4 of chapter 6) that for some particular equations the number s l (û) is the exact formal Gevrey index of û. The main assumption in chapter 6 was that the equation (6.3.1) has a linear part.
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© 1996 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Gérard, R., Tahara, H. (1996). Maillet’s type theorems for non linear singular partial differential equations without linear part. In: Singular Nonlinear Partial Differential Equations. Aspects of Mathematics, vol 28. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-80284-2_7
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DOI: https://doi.org/10.1007/978-3-322-80284-2_7
Publisher Name: Vieweg+Teubner Verlag
Print ISBN: 978-3-322-80286-6
Online ISBN: 978-3-322-80284-2
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