Moreover, the inner automorphism group of a basic quasi-hereditary algebra acts transitively on the set of its exact Borel subalgebras.
【摘
】： 
It is proved that the exact Borel subalgebras of a basic quasi-hereditary algebra are conjugate to each other.
个例子中，step up是不及物的，但是当我将
使用的时候，其含义实际上会发生变化。
