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Reducing Systems of Linear Differential Equations to a Passive Form

In: Symmetries of Partial Differential Equations

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  • V. L. Topunov

    (V. I. Lenin Moscow State Pedagogical Institute, Department of Mathematics)

Abstract

In this paper, an application of the Riquer-Thomas-Janet theory is described for the problem of transforming a system of partial differential equations into a passive form, i.e., to a special form which contains explicitly both the equations of the initial system and all their nontrivial differential consequences. This special representation of a system markedly facilitates the subsequent integration of the corresponding differential equations. In this paper, the modern approach to the indicated problem is presented. This is the approach adopted in the Knuth-Bendix procedure [13] for critical-pair/completion and then Buchberger’s algorithm for completion of polynomial ideal bases [13] (or, alternatively, for the construction of Groebner bases for ideals in a differential operator ring [14]). The algorithm of reduction to the passive form for linear system of partial differential equations and its implementation in the algorithmic language REFAL, as well as the capabilities of the corresponding program, are outlined. Examples illustrating the power and efficiency of the system are presented.

Suggested Citation

  • V. L. Topunov, 1989. "Reducing Systems of Linear Differential Equations to a Passive Form," Springer Books, in: A. M. Vinogradov (ed.), Symmetries of Partial Differential Equations, pages 405-420, Springer.
    • Handle: RePEc:spr:sprchp:978-94-009-1948-8_14
    DOI: 10.1007/978-94-009-1948-8_14
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