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Prinjective Modules, Reflection Functors, Quadratic Forms, and Auslander-Reiten Sequences

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 ...
JSTOR Daily

Linear Systems of Real Quadratic Forms. II

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 ...