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Cotorsion Dimension of Weak Crossed Products

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【作者】 Chen Hua-xiLiang Jin-rong

【Author】 Chen Hua-xi;Liang Jin-rong;Department of Mathematics and Physics,Bengbu College;Department of Basic Courses,Chuzhou Institute of Technology;

【机构】 Department of Mathematics and Physics,Bengbu CollegeDepartment of Basic Courses,Chuzhou Institute of Technology

【摘要】 Let H be a finite-dimensional weak Hopf algebra over a field κ and A an associative algebra, and A#_σH a weak crossed product. In this paper, a spectral sequence for Ext is constructed which yields an estimate for cotorsion dimension of A#_σH in terms of the corresponding data for H and A.

【基金】 The NSF(KJ2016A545,KJ2015B12,2017ZR08zd)of Anhui Province;the key projectsoutstanding young talent support program(gxyq ZD2016353)of Anhui Province
  • 【DOI】10.13447/j.1674-5647.2018.02.05
  • 【分类号】O153
  • 【下载频次】12
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