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1)  τ-preprojective component
τ-预投射分支
1.
We obtainthat a preprojective component Γ of Γ_A is a τ-preprojective component of Γ_A if Γcontains no oriented cycles, and that Γ is a preprojective componeat of Γ_A if and onlyif Γ is a τ-preprojective component of Γ_A for a quasitilted algebra A.
我们得到:如果Γ是Γ_A的一个不包含有向循环的预投射分支,那么Γ是Γ_A的一个τ-预投射分支,且对一个拟倾斜代数A,Γ是Γ_A的一个预投射分支当且仅当Γ是Γ_A的一个,τ-预投射分支
2)  preprojective component
预投射分支
1.
We describe the essential difference of two kinds of preprojective components and give a counter example to illustrate that the two kinds of preprojective components are not the same.
刻划了两种预投射分支的本质差异 ,并给出了一个反例 ,说明这两种分支是不同
3)  τ-projective modules
τ-投射模
1.
The existence of τ-projective test modules is investigated,and some properties of τ-projective modules are given by using dimensions.
证明τ-投射试验模的存在性,并利用维数描述了τ-投射模的一些性质。
4)  collateral projection
分支投射
5)  τ-weak projective module
τ-弱投射模
1.
In the paper,we prove Schanuel s lemma of relatively herediary torsion theory by τ-weak projective module and prove the dual of Schanuel s lemma by τ-injective module.
本文利用τ-弱投射模证明了相对于遗传挠理论的Schanuel’s引理成立;同时利用τ-内射模证明了Schanuel’s引理的对偶定理相对于遗传挠理论亦成立。
2.
In the paper, we describe when τ-weak projective modules are closed under taking homomorphic images, which is dual to τ-injective module; we also describe a distinguish theorem on τ-weak projective cover.
本文给出了与τ-内射模对偶的一类模,称为τ-弱投射模,关于商模封闭的条件;同时描述了τ-投射盖的概念,给出了关于τ-弱投射盖的一个判别定理。
6)  τ-torsion projective cover
τ-挠投射盖
1.
Introduce the corresponding concepts of cover and hull through Q gets the properties of τ-injective,τ-projective,τ-divisible and τ-codivisible,discuss the properties of τ-torsion injective hull, τ-torsion projective cover,τ-torsionfree divisible hull and τ-torsionfree codivisible cover, τ-injective hull E_τ(M) is characterized by using them.
讨论τ-挠内射包,τ-挠投射盖,τ-挠自由可除包和τ-挠自由余可除盖的性质,并利用它们刻画了τ-内射包Eτ(M)。
补充资料:设备安装前的准备工作——设备的预装配与预调整
设备安装前的准备工作——设备的预装配与预调整
 
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