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- W3013055728 abstract "Differential graded algebra techniques have played a crucial role in the development of homological algebra, especially in the study of homological properties of commutative rings carried out by Serre, Tate, Gulliksen, Avramov, and others. In this article, we extend the construction of the Koszul complex and acyclic closure to a more general setting. As an application of our constructions, we shine some light on the structure of the Ext algebra of quotients of skew polynomial rings by ideals generated by normal elements. As a consequence, we give a presentation of the Ext algebra when the elements generating the ideal form a regular sequence, generalizing a theorem of Bergh and Oppermann. It follows that in this case the Ext algebra is noetherian, providing a partial answer to a question of Kirkman, Kuzmanovich, and Zhang." @default.
- W3013055728 created "2020-04-03" @default.
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- W3013055728 date "2020-09-09" @default.
- W3013055728 modified "2023-09-27" @default.
- W3013055728 title "Differential graded algebra over quotients of skew polynomial rings by normal elements" @default.
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- W3013055728 doi "https://doi.org/10.1090/tran/8132" @default.
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