Simply connected algebra of representation - finite have been thoroughly studied , since bongartz and gabrie studied it . but the knowledge of simply connected algebra with representation - infinite type is very poor , only some special class of it was carefully invesitigated 有限維代數(shù)的單連通性與覆蓋理論的關(guān)系十分密切,自bongartz和gabriel開(kāi)始對(duì)有限表示型單連通代數(shù)研究以來(lái),單連通代數(shù)在有限表示型的情形得到了徹底的討論。