共查询到18条相似文献,搜索用时 46 毫秒
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作者定义了Gorenstein AC导出范畴 Dbgac(R)并且和导出范畴作了一些比较.作者定义了Gorenstein AC奇点范畴 Dbgacsg(R),在这个范畴中具有有限Gorenstein AC- 投射维数的模都是零对象.同时, 作者给出了由Gorenstein AC- 投射模构成的稳定范畴到奇点范畴的三角嵌入 F : GAC → Dbsg(R) .通过作函子 F 的商引入Gorenstein AC亏范畴 Dbgacd(R),并且给出三角等价 Dbgacd(R) = Dbgacsg(R) 相似文献
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本文证明了任意环的整体Ding投射维数和整体Ding内射维数一致,研究了奇点范畴和相对于Ding模的稳定范畴间的关系,并刻画了Gorenstein (正则)环以及环的整体维数的有限性. 相似文献
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在这篇论文中,我们研究了$mathcal{A}$-Gorenstein投射模类和$mathcal{A}$的左正交模类之间的关系,以及$mathcal{A}$-Gorenstein内射模类和A的右正交模类之间的关系.我们得到了$mathcal{A}$-Gorenstein投射模和$mathcal{A}$-Gorenstein内射模的一些函子刻画.以完备对偶对为工具,我们讨论了$mathcal{A}$-Gorenstein投射模和$mathcal{B}$-Gorenstein平坦模之间的关系,并推广了一些已知结论. 相似文献
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令R是左Gorenstein环.我们构造了奇点反导出模型范畴和奇点余导出模型范畴(见文[Models for singularity categories,Adv Math.,2014,254:187-232])之间的Quillen等价.作为应用,给出了投射,内射模的正合复形的同伦范畴之间的一个具体的等价■. 相似文献
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设A是一个有限维代数,R是A的对偶扩张代数。本文研究代数R的shod子范畴,A-模范畴D的倾斜对象与R-模范畴D的倾斜对象之间的关系以及R的反变有限的子范畴。 相似文献
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本文研究locale范畴的反射子范畴,给出反射子范畴的刻划定理,从一般的locale出发,完全构造性地给出了locale的正则反射、完全正则反射和零维反射的构造. 相似文献
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Let A be an abelian category,(L) an additive,full and self-orthogonal subcategory of A closed under direct summands,rG((L)) the right Gorenstein subcategory of A relative to (L),and ⊥(L) the left orthogonal class of (L).For an object A in A,we prove that if A is in the right 1-orthogonal class of rG((L)),then the (L)-projective and rG((L))-projective dimensions of A are identical;if the rG((L))-projective dimension of A is finite,then the rG((L))-projective and ⊥(L)-projective dimensions of A are identical.We also prove that the supremum of the (L)-projective dimensions of objects with finite (L)-projective dimension and that of the rG((L))-projective dimensions of objects with finite rG((L))-projective dimension coincide.Then we apply these results to the category of modules. 相似文献
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We study Gorenstein categories. We show that such a category has Tate cohomological functors and Avramov–Martsinkovsky exact sequences connecting the Gorenstein relative, the absolute and the Tate cohomological functors. We show that such a category has what Hovey calls an injective model structure and also a projective model structure in case the category has enough projectives. As examples we show that if X is a locally Gorenstein projective scheme then the category ??????(X) of quasi‐coherent sheaves on X is such a category and so has these features. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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文章研究了三角范畴D及其coherent函子范畴A(D)的recollement之间的关系.利用D的recollement可以诱导A(D)的prerecollement,文章证明了该prerecollement是recollement的充分必要条件是D的recollement是可裂的;并且D的recollement可以诱导A(D)的prerecollement. 相似文献
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LIN YaNan & WANG MinXiong School of Mathematical Sciences Xiamen University Xiamen China School of Mathematical Sciences Huaqiao University Quanzhou 《中国科学 数学(英文版)》2010,(4)
In this paper,we prove that if a triangulated category D admits a recollement relative to triangulated categories D' and D″,then the abelian category D/T admits a recollement relative to abelian categories D'/i(T) and D″/j(T) where T is a cluster tilting subcategory of D and satisfies i i (T) T,j j (T) T. 相似文献
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Houjun Zhang 《代数通讯》2020,48(2):467-483
AbstractIn this article, we investigate the Gorenstein global dimension with respect to the recollements of abelian categories. With the invariants spli and silp of the categories, we give some upper bounds of Gorenstein global dimensions of the categories involved in a recollement of abelian categories. We apply our results to some rings and artin algebras, especially to the triangular matrix artin algebras. 相似文献