A Theorem on Extensions of Bimodules

In this note, given an R-S bimodule _RV_S , we investigate some bimodules of the form Ext A 1 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429187605/d46d5034-f914-41b4-a96f-9f0731bff786/content/eq1058.tif"/> (V,A/I), where A is either R or S and I is an ideal of A contained in the annihilator of V in A.