Algebra

VI of Oregon lectures in 1962, Bass gave simplified proofs of a number of "Morita Theorems", incorporating ideas of Chase and Schanuel. One of the Morita theorems characterizes when there is an equivalence of categories mod-A R::! mod-B for two rings A and B. Morita''s solution organizes ideas so efficiently that the classical Wedderburn-Artin theorem is a simple consequence, and moreover, a simil...