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Hochschild cohomology of truncated quiver algebras 期刊论文
SCIENCE IN CHINA SERIES A-MATHEMATICS, 2007, 卷号: 50, 期号: 5, 页码: 727-736
作者:  Xu, Yun-ge;  Han, Yang;  Jiang, Wen-feng
收藏  |  浏览/下载:73/0  |  提交时间:2018/07/30
truncated quiver algebra  Hochschild cohomology  global dimension  oriented cycle  
Approximation of dense-n/2-subgraph and table compression problems 期刊论文
SCIENCE IN CHINA SERIES A-MATHEMATICS, 2005, 卷号: 48, 期号: 9, 页码: 1223-1233
作者:  Xu, DC;  Han, JY;  Du, DL
收藏  |  浏览/下载:89/0  |  提交时间:2018/07/30
dense-n/2-subgraph problem (DSP)  table compression problem (TCP)  SDP  approximation ratio