Gorenstein flat modules and dimensions over formal triangular matrix rings
L Mao - Journal of Pure and Applied Algebra, 2020 - Elsevier
Abstract Let T=(A 0 UB) be a formal triangular matrix ring, where A and B are rings and U is
a (B, A)-bimodule. We prove that, if T is a right coherent ring, UB has finite flat dimension, UA …
a (B, A)-bimodule. We prove that, if T is a right coherent ring, UB has finite flat dimension, UA …