If M is an essential extension of M' and the module M is injective, then M is called an injective hull of M'. Every module has an injective hull that is unique up to isomorphism. The Z-module Q is the injective hull of the module Zz. If D is a division ...
Provides a succinct, but thorough treatment of algebra. In a collection that spans about 150 sections, organized in 9 chapters, algebraists are provided with a standard knowledge set for their areas of expertise.
|
|