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Sets of Generators of a Commutative and Associative Algebra(1)

Published online by Cambridge University Press:  20 November 2018

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Abstract

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Let A be a finite dimensional commutative and associative algebra with identity, over a field K. We assume also that A is generated by one element and consequently, isomorphic to a quotient algebra of the polynomial algebra K[X]. If A=K[a] and bi=fi(A), fi(X)K[X], 1≤ir we find necessary and sufficient conditions which should be satisfied by fi(X) in order that A = K[b1, …, br].

The result can be stated as a theorem about matrices. As a special case we obtain a recent result of Thompson [4].

In fact this last result was established earlier by Mirsky and Rado [3]. I am grateful to the referee for supplying this reference.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1971

Footnotes

(1)

The preparation of this paper was supported in part by National Research Council Grant A-5285.

References

1. Gantmacher, F. R., The theory of matrices, Vol. 1, Chelsea, New York, 1960.Google Scholar
2. Lang, S., Algebra, Addison Wesley, New York, 1965.Google Scholar
3. Mirsky, L. and Rado, R., A note on matrix polynomials, Quart. J. Math. Oxford Ser. (2) 8 (1957), 128-132.Google Scholar
4. Thompson, R. C., On the matrices A and f(A), Canad. Math. Bull. 12 (1969), 581-587.Google Scholar