THIS excellent book gives a survey of a field which has come into great prominence during the present century for two quite different reasons. First, the theory of relativity has compelled physicists ...

Proceedings of the American Mathematical Society, Vol. 125, No. 8 (Aug., 1997), pp. 2245-2254 (10 pages) We construct the so-called right adjoint sequence of an n × n matrix over an arbitrary ring.