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The plus closure of an idealHayes, Leslie Danielle, January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI/Dissertation Abstracts International.
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The plus closure of an ideal /Hayes, Leslie Danielle, January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 58). Available also in a digital version from Dissertation Abstracts.
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The plus closure of an idealHayes, Leslie Danielle, 1973- 15 March 2011 (has links)
Not available / text
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Some Properties of Commutative Rings Without a UnityStevens, Charles S. 08 1900 (has links)
This thesis investigates some of the properties of commutative rings which do not necessarily contain a multiplicative identity (unity).
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Prime Ideals in Commutative RingsClayton, Marlene H. 08 1900 (has links)
This thesis is a study of some properties of prime ideals in commutative rings with unity.
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Some Properties of Ideals in a Commutative RingHicks, Gary B. 08 1900 (has links)
This thesis exhibits a collection of proofs of theorems on ideals in a commutative ring with and without a unity. Theorems treated involve properties of ideals under certain operations (sum, product, quotient, intersection, and union); properties of homomorphic mappings of ideals; contraction and extension theorems concerning ideals and quotient rings of domains with respect to multiplicative systems; properties of maximal, minimal, prime, semi-prime, and primary ideals; properties of radicals of ideals with relations to quotient rings, semi-prime, and primary ideals.
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Fuzzy ideals in commutative ringsSekaran, Rajakrishnar January 1995 (has links)
In this thesis, we are concerned with various aspects of fuzzy ideals of commutative rings. The central theorem is that of primary decomposition of a fuzzy ideal as an intersection of fuzzy primary ideals in a commutative Noetherian ring. We establish the existence and the two uniqueness theorems of primary decomposition of any fuzzy ideal with membership value 1 at the zero element. In proving this central result, we build up the necessary tools such as fuzzy primary ideals and the related concept of fuzzy maximal ideals, fuzzy prime ideals and fuzzy radicals. Another approach explores various characterizations of fuzzy ideals, namely, generation and level cuts of fuzzy ideals, relation between fuzzy ideals, congruences and quotient fuzzy rings. We also tie up several authors' seemingly different definitions of fuzzy prime, primary, semiprimary and fuzzy radicals available in the literature and show some of their equivalences and implications, providing counter-examples where certain implications fail.
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On the chromatic number of commutative rings with identitySwarts, Jacobus Stephanus 27 August 2012 (has links)
M.Sc. / This thesis is concerned with one possible interplay between commutative algebra and graph theory. Specifically, we associate with a commutative ring R a graph and then set out to determine how the ring's properties influence the chromatic and clique numbers of the graph. The graph referred to is obtained by letting each ring element be represented by a vertex in the graph and joining two vertices when the product of their corresponding ring elements is equal to zero. The thesis focuses on rings that have a finite chromatic number, where the chromatic number of the ring is equal to the chromatic number of the associated graph. The nilradical of the ring plays a prominent role in these- investigations. Furthermore, the thesis also discusses conditions under which the chromatic and clique numbers of the associated graph are equal. The thesis ends with a discussion of rings with low (< 5) chromatic number and an example of a ring with clique number 5 and chromatic number 6.
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Linear discrete time systems over commutative rings /Ching, Wai-Sin January 1976 (has links)
No description available.
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Properties of R-ModulesGranger, Ginger Thibodeaux 08 1900 (has links)
This thesis investigates some of the properties of R-modules. The material is presented in three chapters. Definitions and theorems which are assumed are stated in Chapter I. Proofs of these theorems may be found in Zariski and Samuel, Commutative Algebra, Vol. I, 1958. It is assumed that the reader is familiar with the basic properties of commutative rings and ideals in rings. Properties of R-modules are developed in Chapter II. The most important results presented in this chapter include existence theorems for R-modules and properties of submodules in R-modules. The third and final chapter presents an example which illustrates how a ring R, may be regarded as an R-module and speaks of the direct sum of ideals of a ring as a direct sum of submodules.
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