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Noether bound for invariants in relatively free algebras |
Tartalom: | http://real.mtak.hu/44162/ |
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Archívum: | MTA Könyvtár |
Gyűjtemény: |
Status = Published
Type = Article |
Cím: |
Noether bound for invariants in relatively free algebras
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Létrehozó: |
Domokos, Mátyás
Drensky, Vesselin
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Kiadó: |
Elsevier
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Dátum: |
2016
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Téma: |
QA72 Algebra / algebra
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Tartalmi leírás: |
Let R be a weakly noetherian variety of unitary associative algebras (over a field K of characteristic 0), i.e., every finitely generated algebra from R satisfies the ascending chain condition for two-sided ideals. For a finite group G and a d-dimensional G-module V denote by F(R,V) the relatively free algebra in R of rank d freely generated by the vector space V. It is proved that the subalgebra F(R,V)G of G-invariants is generated by elements of degree at most b(R,G) for some explicitly given number b(R,G) depending only on the variety R and the group G (but not on V). This generalizes the classical result of Emmy Noether stating that the algebra of commutative polynomial invariants K[V]G is generated by invariants of degree at most |G|. © 2016 Elsevier Inc.
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Nyelv: |
angol
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Típus: |
Article
PeerReviewed
info:eu-repo/semantics/article
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Formátum: |
text
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Azonosító: |
Domokos, Mátyás and Drensky, Vesselin (2016) Noether bound for invariants in relatively free algebras. Journal of Algebra, 463. pp. 152-167. ISSN 0021-8693
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Kapcsolat: |
MTMT:3130179; doi:10.1016/j.jalgebra.2016.05.022
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