Gorenstein homological dimensions for triangulated categories
Gorenstein homological dimensions for triangulated categories
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三角类别的 Gorenstein 同调维度
DOI:
10.1016/j.jalgebra.2014.03.037
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发表时间:
2014-07
影响因子:
0.9
通讯作者:
Liu Zhongkui
中科院分区:
文献类型:
--
作者:
Ren Wei;Liu Zhongkui
Let C be a triangulated category with a proper class E of triangles. Asadollahi and Salarian introduced and studied E-G projective and E-G injective objects, and developed a relative homological algebra in C. In this paper, we further study Gorenstein homological dimensions for triangulated categories. First, we discuss the finiteness of E-G projective and E-G injective dimensions. Then we define E-Gorenstein derived functors GE xt E i (−,−), and characterize E-G projective and E-G injective dimensions of objects in C by vanishing of such functors. Consequently we can prove the equality sup {E-G pd M| for any M∈ C}= sup {E-G id M| for any M∈ C}, which is used to define the global E-Gorenstein dimension of C. Finally, E-G phantom tower and E-G cellular tower for objects in C with finite E-G projective dimension are constructed.
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