Abstract
ABSTRACT This contribution deals with the equivalence problems for systems of implicit ordinary differential equations. Equivalence means that every solution of the original set of equations is a solution of some normal form, and vice versa. The system is identified with the submanifold in a suitable jet-space, defined by the equations. Therefore, a short introduction to jet-theory is presented, as well as its application to systems of differential equations. We present several results for well-determined and under-determined systems and give formulas that describe the transform to an appropriate normal form. Apart from the theoretical results, we give several sketches of computer algebra-based algorithms necessary to solve these problems efficiently. *Communicated by J. McPhee. †This article was published with errors in Mechanics of Structures and Machines, 30(1), pp. 103–121. The complete article with corrections is printed here.
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