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Commutative rings graded by abelian groups
Rings graded by Z and Zd play a central role in algebraic geometry and commutative algebra, and the purpose of this thesis is to consider rings graded by any abelian group. A commutative ring is graded by an abelian group if the ring has a direct sum decomposition by additive subgroups of the ring indexed over the group, with the additional condition that multiplication in the ring is compatible with the group operation. In this thesis, we develop a theory of graded rings by defining analogues of familiar properties—such as chain conditions, dimension, and Cohen-Macaulayness. We then study the preservation of these properties when passing to gradings induced by quotients of the grading group.^
Johnson, Brian P, "Commutative rings graded by abelian groups" (2012). ETD collection for University of Nebraska - Lincoln. AAI3519459.