paper

Superposition rules for higher-order systems and their applications

arXiv:1111.4070 · doi:10.1088/1751-8113/45/18/185202

Abstract

Superposition rules form a class of functions that describe general solutions of systems of first-order ordinary differential equations in terms of generic families of particular solutions and certain constants. In this work we extend this notion and other related ones to systems of higher-order differential equations and analyse their properties. Several results concerning the existence of various types of superposition rules for higher-order systems are proved and illustrated with examples extracted from the physics and mathematics literature. In particular, two new superposition rules for second- and third-order Kummer--Schwarz equations are derived.

(v2) 33 pages, some typos corrected, added some references and minor commentaries

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