Generation of invariants

JOURNAL OF ALGEBRA

卷:221

Article

Chiang, L ; Chu, H ; Kang, MC

关键词: rings of invariants;    Weyl algebras;    enveloping algebras;    almost normalizing extensions;   

DOI  :  10.1006/jabr.1999.7967

来源: Elsevier

【 摘 要 】

Let G be any group acting on the Weyl algebra W-1(C). We shall propose a method for finding explicit generators of the ring of invariants W-1(C)(G). This 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 of gr(R)(G) is known. (C) 1999 Academic Press.

【 授权许可】

Free