A linear Fuchsian equation with variable indices |
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Authors: | Ali Bentrad |
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Affiliation: | Laboratoire de Mathématiques, UMR 6056, CNRS, Université de Reims Champagne-Ardenne, Moulin de la Housse, B. P. 1039, F-51687 Reims, France |
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Abstract: | We construct three types of solutions for a Fuchsian equation with variable indices: (1) branched solutions involving logarithms of the time variable t; (2) solutions involving tx, where x is a space variable; and, (3) for a model case, exact solutions involving hypergeometric functions. These three solutions have completely different singularities. The constructions are given in a form suitable for application to more general equations. As an illustration, we resolve in particular an apparent discrepancy between two recent results on this problem. |
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Keywords: | Fuchsian reduction Singularities Hypergeometric functions Euler-Poisson-Darboux equation |
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