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Characteristic set method for differential-difference polynomial systems. (English) Zbl 1169.13019

Summary: We present a characteristic set method for mixed differential and difference polynomial systems. We introduce the concepts of coherent, regular, proper irreducible, and strongly irreducible ascending chains and study their properties. We give an algorithm which can be used to decompose the zero set for a finitely generated differential and difference polynomial sets into the union of the zero sets of regular and consistent ascending chains. As a consequence, we solve the perfect ideal membership problem for differential and difference polynomials.

MSC:

13P99 Computational aspects and applications of commutative rings
13N15 Derivations and commutative rings
68W30 Symbolic computation and algebraic computation
Full Text: DOI

References:

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