涓浗绉戝闄㈡暟瀛︿笌绯荤粺绉戝鐮旂┒闄㈡湡鍒婄綉

鏁板瀛︽姤 鈥衡�� 2022, Vol. 65 鈥衡�� Issue (5): 849-858.DOI: 10.12386/A20210007

鈥� 璁烘枃 鈥� 涓婁竴绡�    涓嬩竴绡�

涓夎鐭╅樀鐜笂鐨勪綑鎸犲涓庣ǔ瀹氳寖鐣�

浠讳紵, 寮犳槬闇�   

  1. 閲嶅簡甯堣寖澶у鏁板绉戝瀛﹂櫌 閲嶅簡 401331
  • 鏀剁鏃ユ湡:2021-01-13 淇洖鏃ユ湡:2021-06-24 鍑虹増鏃ユ湡:2022-09-15 鍙戝竷鏃ユ湡:2021-05-15
  • 閫氳浣滆��: 寮犳槬闇�,E-mail:cxzhang@cqnu.edu.cn
  • 浣滆�呯畝浠�:浠讳紵,E-mail:wren@cqnu.edu.cn
  • 鍩洪噾璧勫姪:
    鍥藉鑷劧绉戝鍩洪噾璧勫姪椤圭洰锛�11871125锛夛紱閲嶅簡甯傝嚜鐒剁瀛﹀熀閲戯紙cstc2018jcyjAX0541锛夊強閲嶅簡甯傛暀濮旂瀛︽妧鏈爺绌堕」鐩紙KJQN201800509锛�

Cotorsion Pairs and Stable Categories over Triangular Matrix Rings

Wei REN Chun, Xia ZHANG   

  1. School of Mathematical Sciences, Chongqing Normal University, Chongqing 401331, P. R. China
  • Received:2021-01-13 Revised:2021-06-24 Online:2022-09-15 Published:2021-05-15

鎽樿锛� 閫氬父鐢ㄢ�滃皬鐜��$A$锛�$B$涓婃ā鐨勬�ц川鍒荤敾涓夎鐭╅樀鐜�$T=\left (\begin{smallmatrix}A&U\\0&B\end{smallmatrix}\right)$涓婄殑妯�.鎴戜滑鍙嶈繃鏉ョ敤鈥滃ぇ鐜��$T$涓婄殑妯¤寖鐣寸殑妯″瀷缁撴瀯锛屽埢鐢讳簡鈥滃皬鐜��$A$锛�$B$涓婄殑Gorenstein鎶曞皠妯$殑绋冲畾鑼冪暣$\underline{\mathcal{GP}}(A)$锛�$\underline{\mathcal{GP}}(B)$.涓烘锛岄鍏堣寮曞叆Gorenstein鎶曞皠$T$-妯¤寖鐣寸殑涓や釜瀛愯寖鐣达紝骞舵瀯閫犱簡涓庝箣瀵瑰簲鐨勪袱涓畬澶囦綑鎸犲.姝ゅ锛屽皢妯$殑浣欐尃瀵规帹骞垮埌澶嶅舰鑼冪暣锛屽苟鐮旂┒浜嗗褰㈢殑鍚屼鸡鑼冪暣涓殑绛変环涓庣矘鍚�.

鍏抽敭璇�: 浣欐尃瀵�, Gorenstein鎶曞皠妯�, 绋冲畾鑼冪暣, 鍚屼鸡鑼冪暣

Abstract: In general, the properties of modules over a triangular matrix ring $T=\left(\begin{smallmatrix}A & U \\0 & B\end{smallmatrix}\right)$ are studied via modules over diagonal "small rings" $A$ and $B$. However, we use model structures on the category of $T$-modules to characterize the stable categories $\underline{\mathcal{GP}}(A)$, $\underline{\mathcal{GP}}(B)$ of Gorenstein projective modules over $A$ and $B$. To this end, we introduce two subcategories of Gorenstein $T$-modules, and obtain two corresponding complete cotorsion pairs. Moreover, cotorsion pairs of modules are lifted to $T$-complexes, and the equivalences and recollements of homotopy categories of complexes are studied.

Key words: cotorsion pair, Gorenstein projective module, stable category, homotopy category

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