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Thesis (B.A.(Hons.))--University of Adelaide, Dept. of English, 1994? / Includes bibliographical references (leaves 62-66).

Doctoral diss.--Universität Zürich, 1995. / Bibliogr. p. 213-226.

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The research field of graded ring theory is a rich area of mathematics with many connections to e.g. the field of operator algebras. In the last 15 years, algebraists and operator algebraists have defined algebraic analogues of important operator algebras. Some of those analogues are rings that come equipped with a group grading. We want to reach a better understanding of the graded structure of those analogue rings. Among group graded rings, the strongly graded rings stand out as being especially well-behaved. The development of the general theory of strongly graded rings was initiated by Dade in the 1980s and since then numerous structural results have been established for strongly graded rings.  In this thesis, we study the class of epsilon-strongly graded rings which was recently introduced by Nystedt, Öinert and Pinedo. This class is a natural generalization of the well-studied class of unital strongly graded rings. Our aim is to lay the foundation for a general theory of epsilon-strongly graded rings generalizing the theory of strongly graded rings. This thesis is based on three articles. The first two articles mainly concern structural properties of epsilon-strongly graded rings. In the first article, we investigate a functorial construction called the induced quotient group grading. In the second article, using results from the first article, we generalize the Hilbert Basis Theorem for strongly graded rings to epsilon-strongly graded rings and apply it to Leavitt path algebras.  In the third article, we study the graded structure of algebraic Cuntz-Pimsner rings. In particular, we obtain a partial classification of unital strongly, epsilon-strongly and nearly epsilon-strongly graded Cuntz-Pimsner rings up to graded isomorphism.

Made available in DSpace on 2016-04-28T14:16:12Z (GMT). No. of bitstreams: 1 Magali Conceicao de Barros de Marchi.pdf: 2083221 bytes, checksum: 4cf0513b9fba9944184b6431a6af9410 (MD5) Previous issue date: 2011-05-13 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / This study has to focus on analysis of period-luminosity relationship for variable stars discovered by Henrietta Swan Leavitt in the early twentieth century. In it we present, through the analysis of documents published at that time, the path taken by Leavitt to find such a relationship as well as presenting the context in which research is embedded Leavitt. The relationship found by Leavitt had an important use in astronomy, since through it was possible to estimate the distance between stars and galaxies / Este estudo tem como foco de análise a relação período-luminosidade para estrelas variáveis encontrada por Henrietta Swan Leavitt no início do século XX. Nele buscamos apresentar, por meio da análise de documentos publicados naquela época, o caminho percorrido por Leavitt para encontrar a tal relação, bem como apresentar o contexto em que a investigação Leavitt está inserida. A relação encontrada por Leavitt teve importante uso na Astronomia, visto que por meio dela era possível estimar a distância entre estrelas e galáxias

133 f. / Submitted by Cynthia Nascimento (cyngabe@ufba.br) on 2013-06-27T11:49:05Z No. of bitstreams: 7 Vivaldo Lima Trindade - Texto 6.pdf: 59737 bytes, checksum: baba2ed1e3e2f5a57b44fc37ff24cf78 (MD5) Vivaldo Lima Trindade - Texto 5.pdf: 172238 bytes, checksum: feea779860a1e903b72e9b75b21c4e0d (MD5) Vivaldo Lima Trindade - Texto 4.pdf: 131361 bytes, checksum: 60309ead72d7292381adb87e9c9cd032 (MD5) Vivaldo Lima Trindade - Texto 3.pdf: 199898 bytes, checksum: 8cd31295fc8aa71281cb72a5531a6620 (MD5) Vivaldo Lima Trindade - Texto 2.pdf: 149408 bytes, checksum: 7a76aa435df0960a670d163aed3f80f6 (MD5) Vivaldo Lima Trindade - Texto 1.pdf: 21320 bytes, checksum: d729d00118e79489ad755ead2d7a6864 (MD5) Vivaldo Lima Trindade - Pré-textuais.pdf: 31688 bytes, checksum: 77550e266ae96d1c55ee64bb460196b2 (MD5) / Approved for entry into archive by Alda Lima da Silva(sivalda@ufba.br) on 2013-06-27T20:58:49Z (GMT) No. of bitstreams: 7 Vivaldo Lima Trindade - Texto 6.pdf: 59737 bytes, checksum: baba2ed1e3e2f5a57b44fc37ff24cf78 (MD5) Vivaldo Lima Trindade - Texto 5.pdf: 172238 bytes, checksum: feea779860a1e903b72e9b75b21c4e0d (MD5) Vivaldo Lima Trindade - Texto 4.pdf: 131361 bytes, checksum: 60309ead72d7292381adb87e9c9cd032 (MD5) Vivaldo Lima Trindade - Texto 3.pdf: 199898 bytes, checksum: 8cd31295fc8aa71281cb72a5531a6620 (MD5) Vivaldo Lima Trindade - Texto 2.pdf: 149408 bytes, checksum: 7a76aa435df0960a670d163aed3f80f6 (MD5) Vivaldo Lima Trindade - Texto 1.pdf: 21320 bytes, checksum: d729d00118e79489ad755ead2d7a6864 (MD5) Vivaldo Lima Trindade - Pré-textuais.pdf: 31688 bytes, checksum: 77550e266ae96d1c55ee64bb460196b2 (MD5) / Made available in DSpace on 2013-06-27T20:58:49Z (GMT). No. of bitstreams: 7 Vivaldo Lima Trindade - Texto 6.pdf: 59737 bytes, checksum: baba2ed1e3e2f5a57b44fc37ff24cf78 (MD5) Vivaldo Lima Trindade - Texto 5.pdf: 172238 bytes, checksum: feea779860a1e903b72e9b75b21c4e0d (MD5) Vivaldo Lima Trindade - Texto 4.pdf: 131361 bytes, checksum: 60309ead72d7292381adb87e9c9cd032 (MD5) Vivaldo Lima Trindade - Texto 3.pdf: 199898 bytes, checksum: 8cd31295fc8aa71281cb72a5531a6620 (MD5) Vivaldo Lima Trindade - Texto 2.pdf: 149408 bytes, checksum: 7a76aa435df0960a670d163aed3f80f6 (MD5) Vivaldo Lima Trindade - Texto 1.pdf: 21320 bytes, checksum: d729d00118e79489ad755ead2d7a6864 (MD5) Vivaldo Lima Trindade - Pré-textuais.pdf: 31688 bytes, checksum: 77550e266ae96d1c55ee64bb460196b2 (MD5) / Estudo do universo de representação das personagens homoeróticas em contos de Reinaldo Arenas, David Leavitt e João Silvério Trevisan, escritores gueis assumidos. Após contextualizar o espaço geográfico e simbólico em que os três atuam, a construção das diferentes Américas enquanto “paraíso terrestre”, lugar de igualdade, justiça e liberdade, e tentar demonstrar o corte epistemológico que a noção de homoerotismo sofreu com o movimento de emancipação guei de Stonewall – inicialmente, nos Estados Unidos e, posteriormente, no mundo –, este trabalho focaliza alguns temas recorrentes nos textos de Arenas, Leavitt e Trevisan, o conflito entre o desejo homoerótico e as principais instituições repressoras da sexualidade: o Estado, a Família e a Igreja. É verificada também a pertinência da política de “sair do armário”, para se assumir uma identidade guei, e a contribuição que a literatura desses três escritores acrescenta ao debate. / Universidade Federal da Bahia. Instituto de Letras. Salvador-Ba, 2007.