Reducing Systems of Linear Differential Equations to a Passive Form

V. L. Topunov
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V. L. Topunov: V. I. Lenin Moscow State Pedagogical Institute, Department of Mathematics

A chapter in Symmetries of Partial Differential Equations, 1989, pp 405-420 from Springer

Abstract: 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.

Keywords: Computer algebra; partial differential equations; passive system; algebraic computations (search for similar items in EconPapers)
Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-94-009-1948-8_14

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DOI: 10.1007/978-94-009-1948-8_14

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