The Canadian Journal of Statistics / La Revue Canadienne de Statistique Necessary and sufficient conditions are given for the covariance structure of all the observations in a multivariate factorial ...
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 ...
THESE are Nos. 3, 4, and 5 of the Cambridge Tracts in Mathematics and Mathematical Physics, which are intended to help students by providing them with brief and readable introductions to mathematical ...