National Changhua University of Education Institutional Repository : Item 987654321/15017
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题名: Higher Derivations of Ore Extensions
作者: Chuang, Chen-Lian;Lee, Tsiu-Kwen;Liu, Cheng-Kai;Tsai, Yuan-Tsung
贡献者: 數學系
关键词: Derivation;Prime ring;Higher derivation;Bimodule map;Ore extension;Skew polynomial ring
日期: 2010-01
上传时间: 2013-01-07T01:44:06Z
出版者: SpringerLink
摘要: Let R be a prime ring and δ a derivation of R. Divided powers $$ D_n ^\underline\underline def. \tfrac1 n!\tfracd^n dx^n $$ of ordinary differentiation d/dx form Hasse-Schmidt higher derivations of the Ore extension (skew polynomial ring) R[x; δ]. They have been used crucially but implicitly in the investigation of R[x; δ]. Our aim is to explore this notion. The following is proved among others: Let Q be the left Martindale quotient ring of R. It is shown that $$ S^\underline\underline def. Q[x;δ ] $$ is a quasi-injective (R, R)-module and that any (R,R)-bimodule endomorphism of S can be uniquely expressed in the form $$ θ (f) = ∑\limits_n = 0^∞ ζ _n D_n (f) forf ∈ Q[x;δ ], $$ where ζ n ∈ C S (R), the centralizer of R in S. As an application, we also use the Ore extension R[x; δ] to deduce Kharchenko’s theorem for a single derivation. These results are extended to the Ore extension R[X;D] of R by a sequence D of derivations of R.
關聯: Israel Journal of Mathematics, 175(1): 157-178
显示于类别:[數學系] 期刊論文

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