Journal article 1258 views 172 downloads
Skew derivations on generalized Weyl algebras
Munerah Almulhem,
Tomasz Brzeziński,
Tomasz Brzezinski 
Journal of Algebra, Volume: 493, Pages: 194 - 235
Swansea University Author:
Tomasz Brzezinski
DOI (Published version): 10.1016/j.jalgebra.2017.09.018
Abstract
A wide class of skew derivations on degree-one generalized Weyl algebras R(a, φ) over a ring R is constructed. All these derivations are twisted by a degree- counting extensions of automorphisms of R. It is determined which of the constructed derivations are Q-skew derivations. The compatibility of...
| Published in: | Journal of Algebra |
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| ISSN: | 00218693 |
| Published: |
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa35456 |
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| Abstract: |
A wide class of skew derivations on degree-one generalized Weyl algebras R(a, φ) over a ring R is constructed. All these derivations are twisted by a degree- counting extensions of automorphisms of R. It is determined which of the constructed derivations are Q-skew derivations. The compatibility of these skew derivations with the natural Z-grading of R(a,φ) is studied. Additional classes of skew derivations are constructed for generalized Weyl algebras given by an automorphism φ of a finite order. Conditions that the central element a that forms part of the structure of R(a, φ) need to satisfy for the orthogonality of pairs of aforementioned skew derivations are derived. In addition local nilpotency of constructed derivations is studied. General constructions are illustrated by description of all skew derivations (twisted by a degree- counting extension of the identity automorphism) of generalized Weyl algebras over the polynomial ring in one variable and with a linear polynomial as the central element. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
194 |
| End Page: |
235 |