Consider a mapping $F: \mathbf{R}^n \rightarrow \mathbf{R}^3 (n \geqslant 3)$ defined by an ordered triple of real-valued quadratic forms; if some linear combination ...

Let A, B be artinian rings and let AM B be an (A - B)-bimodule which is a finitely generated left A-module and a finitely generated right B-module. A right AM B-prinjective module is a finitely ...