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Generation of Invariants

✍ Scribed by Li Chiang; Huah Chu; Ming-chang Kang

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
83 KB
Volume
221
Category
Article
ISSN
0021-8693

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✦ Synopsis

Let G be any group acting on the Weyl algebra W ‫ރ‬ . We shall propose a 1 Ε½ . G method for finding explicit generators of the ring of invariants W ‫ރ‬ . This 1 method can be generalized to the case of the ring of invariants of an almost normalizing extension R over a commutative ring C under the linear action of a < < finite group G, provided that G is invertible in C and a set of explicit generators Ε½ . G of gr R is known.

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