一个Bocs的表示范畴（Ⅱ）──几乎可裂映射

THE REPRESENTATION CATEGORY OF A BOCS(Ⅱ)──THE ALMOST SPLIT MAPS

给出了在任意Ｂｏｃｓ上的左（或右）几乎可裂映射以及几乎可裂序列的定义，并用线性代数与矩阵的语言给出了Ｒ（）中的一个射元可能成为左几乎可裂映射的刻画。

It is given that a general definition of left(or right) almost split maps and almost split sequences over an arbitary bocs.Then a special description for a morphism in R which could be a left almost split map will be shown in the language of linear algebra and matrix theory.