The Module Structure of a Group Action on a Ring
Fuente:
arXiv
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| Autor principal: | |
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| Formato: | Preprint |
| Publicado: |
2022
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| Materias: | |
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| _version_ | 1866917664588300288 |
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| author | Symonds, Peter |
| author_facet | Symonds, Peter |
| contents | Consider a finite group $G$ acting on a graded Noetherian $k$-algebra $S$, for some field $k$ of characteristic $p$; for example $S$ might be a polynomial ring. Regard $S$ as a $kG$-module and consider the multiplicity of a particular indecomposable module as a summand in each degree. We show how this can be described in terms of homological algebra and how it is linked to the geometry of the group action on the spectrum of $S$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_03379 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The Module Structure of a Group Action on a Ring Symonds, Peter Commutative Algebra Representation Theory 13A50 (Primary) 14L24, 20C20 (Secondary) Consider a finite group $G$ acting on a graded Noetherian $k$-algebra $S$, for some field $k$ of characteristic $p$; for example $S$ might be a polynomial ring. Regard $S$ as a $kG$-module and consider the multiplicity of a particular indecomposable module as a summand in each degree. We show how this can be described in terms of homological algebra and how it is linked to the geometry of the group action on the spectrum of $S$. |
| title | The Module Structure of a Group Action on a Ring |
| topic | Commutative Algebra Representation Theory 13A50 (Primary) 14L24, 20C20 (Secondary) |
| url | https://arxiv.org/abs/2205.03379 |