$n$-cotorsion pairs over formal triangular matrix rings

Taolue Long, Xiaoxiang Zhang

Let $\hat{I}›=\left(\begin{array}{cc}A& 0\\ U& B\end{array}\right)$ be a formal triangular matrix ring where $A,B$ are rings and $U$ is a $(B,A)$-bimodule. In this paper, we study some special cla…