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Gröbner bases and products of coefficient rings

Published online by Cambridge University Press:  17 April 2009

Graham H. Norton
Affiliation:
Department of Mathematics, The University of Queensland, Queensland 4072, Australia
Ana Sӑlӑgean
Affiliation:
Department of Computer Science, Loughborough University, Leicestershire LE11 3TUUnited Kingdom
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Abstract

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Suppose that A is a finite direct product of commutative rings. We show from first principles that a Gröbner basis for an ideal of A[x1,…,xn] can be easily obtained by ‘joining’ Gröbner bases of the projected ideals with coefficients in the factors of A (which can themselves be obtained in parallel). Similarly for strong Gröbner bases. This gives an elementary method of constructing a (strong) Gröbner basis when the Chinese Remainder Theorem applies to the coefficient ring and we know how to compute (strong) Gröbner bases in each factor.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2002

References

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