On tame and wild bocses  

作　　者：ZHANG Yingbo XU Yunge 

机构地区：[1]Department of Mathematics, Beijing Normal University,Beijing,100875,China Department of Mathematics, Beijing Normal University,Beijing,100875,China [2]Faculty of Mathematics & Computer Sciences,Hubei University, Wuhan,430062,China

出　　处：《Science China Mathematics》2005年第4期456-468,共13页中国科学：数学（英文版）

摘　　要：We first give an alternative proof of the well-known Drozd's wild Theorem,which lowers down the dimension 43 to 20. Then we list more minimally wild bocses and discuss the possible differentials of the first arrow of a tame bocs, which is useful for reductions of bocses.We first give an alternative proof of the well-known Drozd's wild Theorem, which lowers down the dimension 43 to 20. Then we list more minimally wild bocses and discuss the possible differentials of the first arrow of a tame bocs, which is useful for reductions of bocses.

关 键 词：Bocs  tameness  wildness  differential. 

分 类 号：N[自然科学总论]