Dissertations / Theses on the topic 'Associative rings'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 26 dissertations / theses for your research on the topic 'Associative rings.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Badawi, Ayman R. "π-regular Rings." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc279388/.
Full textMontgomery, Martin. "Dimension of certain cleft binomial rings /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1188874501&sid=7&Fmt=2&clientId=11238&RQT=309&VName=PQD.
Full textTypescript. Includes vita and abstract. Includes bibliographical references (leaf 77). Also available for download via the World Wide Web; free to University of Oregon users.
Kriel, Marelize. "Endomorphism rings of hyperelliptic Jacobians." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1077.
Full textRivera, Roberto Rafael. "On properties of completely flexible loops." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/28841.
Full textLi, Yunchang, and 李云昌. "Degree estimate and preserving problems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206360.
Full textGreen, Ellen Yvonne. "Characterizing the strong two-generators of certain Noetherian domains." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1539.
Full textChin, Melanie Soo, and m. chin@cqu edu au. "Towards a Reinterpretation of the Radical Theory of Associative Rings Using Base Radical and Base Semisimple Class Constructions." Central Queensland University. Computer Science, 2004. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20050411.102928.
Full textFerreira, Mauricio de Araujo 1982. "Funções valorização e anéis de valorização de Dubrovin em álgebras simples." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306563.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica
Made available in DSpace on 2018-08-19T04:54:44Z (GMT). No. of bitstreams: 1 Ferreira_MauriciodeAraujo_D.pdf: 1468385 bytes, checksum: 5379cb7621a86850c4016ed524805e3f (MD5) Previous issue date: 2011
Resumo: Nesta tese estudamos a relação entre duas teorias de valorização não-comutativas: anéis de valorização de Dubrovin e gauges. Os anéis de valorização de Dubrovin foram introduzidos em 1982, como uma generalização para anéis artinianos simples dos anéis de valorização invariantes em álgebras de divisão. Gauges são funções como valorizações, que podem ser definidas não só em álgebra de divisão, mas mais geralmente em álgebras simples e até mesmo semi-simples, de dimensão finita sobre corpos valorizados. Gauges foram introduzidas muito mais recentemente em 2010 por Tignol e Wadsworth. Assim como em valorizações de corpos, podemos definir um anel associado a uma gauge, que chamamos de anel da gauge. Propriedades aritméticas do anel da gauge são estudadas. Mostramos que o anel de uma gauge é sempre uma ordem semi-local integral sobre seu centro. Também descrevemos o anel da gauge com relação a composição de gauges e extensão de escalares. Introduzimos o conceito de gauge minimal em álgebras centrais simples, que são gauges cuja parte de grau zero da álgebra graduada associada tem o menor número possível de componentes simples. Mostramos que o anel de uma gauge minimal coincide com a interseção de uma família de anéis de valorização de Dubrovin, satisfazendo uma propriedade adicional, que foi introduzida por Gräter em 1992, e que é chamada de propriedade da interseção. Reciprocamente, se for dada uma família de anéis de valorização de Dubrovin, satisfazendo a propriedade da interseção, então existe uma gauge minimal associada, assumindo-se que a valorização de centro tem posto finito. O passo fundamental nesse sentido foi obtermos um teorema de existência de gauges minimais em álgebras centrais simples sobre corpos com uma valorização de posto finito. Além disso, generalizamos para álgebras simples, não necessariamente centrais, um resultado de Tignol e Wadsworth que relaciona gauges com certas funções valorização introduzidas por Morandi em 1989 e que estão associadas aos anéis de valorização de Dubrovin integrais sobre o centro. Como consequência desse último resultado, obtivemos um teorema de existência de gauges em álgebras semi-simples de dimensão finita sobre um corpo com uma valorização de posto 1
Abstract: In this thesis work we study the connection between two theories of noncommutative valuation: Dubrovin valuation rings and gauges. Dubrovin valuation rings were introduced in 1982 as a generalization of invariant valuation rings to Artinian simple rings. Gauges are valuation-like maps that can be defined not only on division algebras, but more generally, on finite-dimensional semisimple algebras over valued fields. Gauges were introduced much more recently in 2010 by Tignol and Wadsworth. Just as for valuations on fields, we can define a ring associated to a gauge, which we call gauge ring. Arithmetic properties of the gauge ring are studied. We show that the gauge ring is always a semi-local order integral over its center. We also describe the gauge ring with respect to composition of gauges and scalar extension. We introduce the concept of minimal gauge on central simple algebras, which are gauges that the degree zero part of the associated graded ring has the least number of simple components. We show that the ring of a minimal gauge is an intersection of a family of Dubrovin valuation rings having the intersection property. The intersection property was introduced by Gräter in 1992. We also proved that if we start with a family of Dubrovin valuation rings having the intersection property, then there exist a minimal gauge associated, assuming that the valuation of the center has finite rank. In this direction, our main result is an existence theorem of minimal gauges on central simple algebra over a field with a finite rank valuation. We also generalize for simple algebras, non-necessarily central, a result of Tignol and Wadsworth which relate gauges with certain value functions introduced by Morandi in 1989. This value functions are associated to Dubrovin valuation rings integral over its center. As a consequence of this last result, we obtain an existence theorem of gauges on finite dimensional semisimple algebras over a field with a rank one valuation
Doutorado
Matematica
Doutor em Matemática
Laubacher, Jacob C. "Secondary Hochschild and Cyclic (Co)homologies." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1489422065908758.
Full textWagner, David R. "Schur Rings Over Projective Special Linear Groups." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6089.
Full textBilal, Muhammad. "Codes over rings: maximum distance separability and self-duality." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/107703.
Full textBounds on the size of a code are an important part of coding theory. One of the fundamental problems in coding theory is to find a code with largest possible distance d. Researchers have found different upper and lower bounds on the size of linear and nonlinear codes e.g., Plotkin, Johnson, Singleton, Elias, Linear Programming, Griesmer, Gilbert and Varshamov bounds. In this dissertation we have studied the Singleton bound, which is an upper bound on the minimum distance of a code, and have defined maximum distance separable (MDS) Z2Z4 additive codes. Two different forms of these bounds are presented in this work where we have characterized all maximum distance separable Z2Z4-additive codes with respect to the Singleton bound (MDSS) and strong conditions are given for maximum distance separable Z2Z4-additive codes with respect to the rank bound (MDSR). Generation of new codes has always been an interesting topic, where one can study the properties of these newly generated codes and establish new results. Self-dual codes are an important class of codes. There are numerous constructions of self-dual codes from combinatorial objects. In this work we have given two methods for generating self-dual codes from 3-class association schemes, namely pure construction and bordered construction. Binary self-dual codes are generated by using these two methods from non-symmetric 3-class association schemes and self-dual codes from rectangular association schemes are generated over Zk. Borges, Dougherty and Fernández-Córdoba in 2011 presented a method to generate new Z2Z4-additive self-dual codes from the existing Z2Z4-additive selfdual codes by extending their length. In this work we have verified whether properties like separability, antipodality and code Type are retained or not, when using this method.
Zimmerman, Wendy Cherie. "Association of Pericentrin with the γ Tubulin Ring Complex: a Dissertation." eScholarship@UMMS, 2004. https://escholarship.umassmed.edu/gsbs_diss/122.
Full textCosta, Cano Francisco José. "Estudio de las relaciones entre propiedades de un anillo y sus anillos de matrices infinitas." Doctoral thesis, Universidad de Murcia, 2006. http://hdl.handle.net/10803/10964.
Full textThe purpose of this thesis is the study of the relationship between properties of a ring R and properties of some of its infinite matrix rings.A standard result in this topics may be stated as: "Let P and Q two properties. The ring R satisfies property P if and only if certain infinite matrix ring, S, over R, satisfies property Q.The principal infinite matrix types considered in this thesis are, first, those matrices that have a finite number of nonzero entries in each row, known as "row finite matrices", and second, those matrices that have a finite number of nonzero elements in each row and each column, known as "row and column finite matrices".
Caprio, Joseph M., Harold C. Fritts, Richard L. Holmes, David M. Meko, and Deborah L. Hemming. "A Chi-Square Test for the Association and Timing of Tree Ring-Daily Weather Relationships: A New Technique for Dendroclimatology." Tree-Ring Society, 2003. http://hdl.handle.net/10150/262549.
Full textSilva, Viviane Moretto da. "Algebras de Lie finitamente apresentaveis." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306934.
Full textDissertação (mestrado) - Universidade Estadual de Campinas. Instituto de Matematica, Estatistica e Computação Científica
Made available in DSpace on 2018-08-04T04:02:42Z (GMT). No. of bitstreams: 1 Silva_VivianeMorettoda_M.pdf: 772022 bytes, checksum: df78c072210885081ecac3c1e89b04fd (MD5) Previous issue date: 2005
Resumo: Nesta dissertação de mestrado, estudamos propriedades de álgebras de Lie. As Álgebras de Lie têm grande importância nao somente na teoria de álgebras não associativas, elas surgem também em geometria, topologia e no estudo da teoria de grupos por exemplo. As definições e resultados básicos sobre álgebras de Lie estão inclusos no Capítulo 2. Para esta parte do trabalho, utilizamos os livros [1] e [2]. O nosso enfoque foi sobre álgebras universais envelopantes, mergulhando assim a álgebra de Lie em álgebras associativas (Seções 2.4, 2.5 e 2.6). O objetivo principal da dissertação foi estudar o artigo [4], ¿Finite presentation of abelian-by-finite dimensional Lie algebras¿, que classifica álgebras de Lie finitamente apresentáveis (no sentido de serem definidas por número finito de geradores e relações) que são extensões de ideal abeliano por álgebra de Lie de dimensão finita. Definimos álgebras de Lie livres na seção 2.7.Tratam-se de objetos na categoria de álgebras de Lie que satisfazem propriedade universal semelhante a definição de grupos livres. A classificação de álgebras de Lie que são extensões de ideal abeliano por álgebra de Lie de dimensão finita usa teoria de módulos Noetherianos. No Capítulo 1 incluímos resultados básicos sobre módulos, em particular estudamos módulos Noetherianos, não necessariamente sobre anéis comutativos (para este estudo utilizamos [9]), embora alguns resultados sejam válidos somente no caso onde o anel básico é comutativo (caso do Teorema da Base de Hilbert 1.31 no Capítulo 1). No final, nos Capítulos 3 e 4, explicamos de maneira bem minuciosa (com mais 6 detalhes que o original) o resultado principal de [4], que 'e apresentado na página 42: Proposicão 3.2: Seja L uma álgebra de Lie finitamente gerada sobre o corpo K. Suponha que L tenha um ideal abeliano A tal que L/A tem dimensão finita como espaço vetorial. Seja R álgebra universal envelopante de L/A. Suponha também que o quadrado tensorial A X A é finitamente gerado como R-módulo sobre a ação diagonal. Então L é finitamente apresentável. Os métodos da demonstração de 3.2 envolvem muitos cálculos com relações em L para mostrar que um conjunto finito E 'e suficiente para gerar todas as relações em L. Embora os cálculos sejam muitos, a técnica principal 'e a indução e a Identidade de Jacobi. A teoria de módulos Noetherianos também foi muito utilizada
Abstract: In this work we study the classification of finitely presented abelian-by-finite dimensional Lie algebras given in [4]. If L is a Lie algebra, an extension of an abelian ideal A by a finite dimensional Lie algebra L/A then L is finitely presented if and only if A X A is finitely generated as U(L/A)-module via the diagonal action, where U(L/A) is the universal enveloping algebra of L/A. We study in detail the result that finite generation of A X A over U(L/A) implies finite presentability of L
Mestrado
Matematica
Mestre em Matemática
Bastian, Nicholas Lee. "Terwilliger Algebras for Several Finite Groups." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8897.
Full textKinuthia, Wanyee. "“Accumulation by Dispossession” by the Global Extractive Industry: The Case of Canada." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/30170.
Full textKwei, Shiue Wen, and 薛文魁. "Skew Derivations On Associative Rings." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/76709976206664799724.
Full textMcConnell, N. R(Nicholas Richard). "Studies in radical theory for restricted classes of rings." Thesis, 1990. https://eprints.utas.edu.au/20170/1/whole_McConnellNicholasRichard1991_thesis.pdf.
Full textReynders, Schalk Willem. "Regulariteite in ringe." Thesis, 2014. http://hdl.handle.net/10210/11938.
Full textShardha, S. "On certain non-associative rings and algebras with commutators in the nuclei." Thesis, 1986. http://localhost:8080/xmlui/handle/12345678/4720.
Full text(9910865), Melanie Soo Chin. "Towards a reinterpretation of the radical theory of associative rings using base radical and base semisimple class constructions." Thesis, 2004. https://figshare.com/articles/thesis/Towards_a_reinterpretation_of_the_radical_theory_of_associative_rings_using_base_radical_and_base_semisimple_class_constructions/13417001.
Full text(9788648), Guy Cooke. "On lower radical type constructions." Thesis, 2010. https://figshare.com/articles/thesis/On_lower_radical_type_constructions/13456742.
Full textJuang, Ming-Yu, and 莊明裕. "The Association between Hypertension andWhite Ring around Iris." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/10041331509815376469.
Full text建國科技大學
機電光系統研究所
94
The elongation of the average life-span of Taiwan nationals leads Taiwan to be becoming an advanced age society.The body functions of the middle-age and aged people are also degenerating. Hence, the chronic diseases, especially cardiovascular diseases, have been becoming the great threatens to these ages. Hypertension is one kind of common diseases, and it is also a very important reason causing cardiovascular diseases and even death in developed countries. Due to hypertension itself having no obvious symptoms, people are acknowledged while they fall ill seriously. Therefore, hypertension is called an invisible killer. Our study was to collect the data from 48 test-acceptors,average age 50.6±11.1,who were divided into two groups, hypertension and non-hypertension. The test-acceptors were examined with iris detector to check whether there is any spray around their periphery iris. We counted the numbers of the two groups, and then analyzed the data by Chi-square Test . The result was P<0.001,it would indicate the obvious association between hypertension and the producing of spray around the periphery iris. The aim of this study was to take the non-invasive and the non-medicine human body examination based on preventive medicine. We encourage the elder people and even those who don’t like to take health examination in the hospital to observe their periphery iris with a pen light in ordinary. The purposes were to beforehand prevent hypertension producing by completing the promotion of the hygienic condition and to reach the goal of early discovery early treatment.
Restrepo, Blandon Fredy Alexander. "Operadores diferenciales de tipo de Lunts-Rosenberg de álgebras de matrices polinómicas, álgebras de caminos y álgebras de matrices triangulares formales." Doctoral thesis, 2019. http://hdl.handle.net/11086/11749.
Full textEn este trabajo estudiamos el anillo filtrado de operadores diferenciales sobre álgebras no conmutativas D(A) , formulado por primera vez de manera intrínseca por Lunts y Rosenberg. Describimos el anillo de operadores diferenciales para las álgebras de matrices polinómicas Mm(C[X]), las álgebras de caminos sobre un carcaj finito, acíclico y conexo Γ(Q), y las álgebras de matrices triangulares formales TL. Cerramos este trabajo exponiendo nuevos operadores diferenciales que no provienen de las derivaciones, obteniendo así, nuevos objetos de estudio
In this work, we study the filtered ring of differential operators on non-commutative algebras D(A), formulated for the first time in an intrinsic way by Lunts and Rosenberg. We describe the ring of differential operators for the polynomial matrix algebras Mm(C[X]) , the algebras of paths on a finite, acyclic and connected quiver Γ(Q), and the algebras of formal triangular matrices TL. We close this work, exposing new differential operators that do not come from derivations, thus obtaining new objects of study.
Fil: Restrepo Blandon, Fredy Alexander. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Li, Boyu. "Ring/Chain versus Network: Architecture Induced by Self- versus Pairwise-Association of Telechelic Polymers." Thesis, 2016. https://thesis.library.caltech.edu/9805/1/Boyu%20Li%27s%20thesis.pdf.
Full textNon-covalent associations, including hydrophobic interaction or ionic interaction for self-association, and metal coordination or hydrogen-bonding for complementary-association, have been widely used as key interactions in supramolecules formation with telechelic associative polymers. And a specific application of long associative telechelic polymers has been developed by our group for the mist-control and drag-reduction of liquid fuels. During the research on this project, self- and pairwise-associative telechelic polymers are able to be compared for the first time, and are shown to display distinct associative patterns. In order to design materials with the desired properties, it is imperative to understand the relationships between polymer chemical structure and their topology and dynamics.
In this thesis, self-associative telechelic polymer refers to α,ω-di(isophthalic acid) polycyclooctadiene (DA-PCOD), which can associate with itself through its acid ends. When tertiary amine-ended polymer is added into the mixture, isophthalic acid preferably associates pairwisely with tertiary amine due to the higher binding strength of charge-assisted hydrogen bond. And the 1:1 molar ratio mixture of α,ω-di(isophthalic acid) and α,ω-di(di(tertiary amine)) PCOD (DA/DB-PCOD) is named as pairwise-associative telechelic polymers. DA-PCOD is capable of multimeric association via directional hydrogen bonding due to the specific chemical structure of the isophthalic acid end, while DA/DB-PCOD exhibits dynamics that strikingly resembles that for linear covalent polymers. Temperature determines the binding strength of self- and pairwise- end association, and furthermore, the fraction of unbound ends and the distribution and topology of formed supramolecules/aggregates. Polymer length affects the dynamics of DA-PCOD mainly through determining the concentration of the end groups. And the net effect of chain length on the dynamics of DA/DB-PCOD is non-monotonic and varies with the specific temperature and concentration. The knowledge of structure-property relationships obtained from this work will enable future design of end group entities and other properties of these associative telechelic polymers for their specific applications.