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oai:docta.ucm.es:20.500.14352/439242024-07-16T14:55:24Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Campoamor Stursberg, Otto-Rudwig author 2011 Starting from the study of the symmetries of systems of 4 second-order linear ODEs with constant real coefficients, we determine the dimension and generators of the symmetry algebra for systems of n equations described by a diagonal Jordan canonical form. We further prove that some dimensions between the lower and upper bounds cannot be attained in the diagonal case, and classify the Levi factors of the symmetry algebras. 1007-5704 https://hdl.handle.net/20.500.14352/43924 http://www.sciencedirect.com/science/article/pii/S1007570410005824# http://www.sciencedirect.com/ Systems of second-order linear ODE’s with constant coefficients and their symmetries