d-b-preinvex type mappings
Jianwen PENG College of Mathematics and Computer Science;Chongqing Normal University;Chongqing 400047;China;De partment of Mathematics;Inner Mongolia University;Hohhot 010021;China.Xinmin YANG College of Mathematics and Compater Science;Chongqing Normal University;Chongqing 400047;China.Weidong RONG Department of Mathematics.Inner Mongolia University;Hohhot 010021;China.
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optimal starting price for ebay-like online auctions
Hai YU Institute of Systems Science;Academy of Mathematics and Systems Science;Chinese Academy of Sciences;Beijing 100080;China;Graduate School of the Chinese Academy of Sciences;Beijing 100049;China.Shouyang WANG Institute of Systems Science;Academy of Mathematics and Systems Science;Chinese Academy of Sciences;Beijing 100080;China.Chuangyin DANG Department of Manuafacturing Engineering and Engineering Management;City University of Hong Kong;Hong Kong.Cina.
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studying complex adaptive systems
John H.Holland Department of Electrical Engineering and Computer Science.College of Engineering.University of Michigan;1301 Beal A Avenue;Ann Arbor;Michigan 48109-2122;USA.
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