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1	Quaternion Algebras and Quadratic Forms Zi Yang, Sham 08 May 2008 (has links) The main goal of this Masters' thesis is to explore isomorphism types of quaternion algebras using the theory of quadratic forms, number theory and algebra. I would also present ways to characterize quaternion algebras, and talk about how quaternion algebras are important in Brauer groups by describing a theorem proved by Merkurjev in 1981. quadratic forms quaternion algebras Accounting
2	Quaternion Algebras and Quadratic Forms Zi Yang, Sham 08 May 2008 (has links) The main goal of this Masters' thesis is to explore isomorphism types of quaternion algebras using the theory of quadratic forms, number theory and algebra. I would also present ways to characterize quaternion algebras, and talk about how quaternion algebras are important in Brauer groups by describing a theorem proved by Merkurjev in 1981. quadratic forms quaternion algebras Accounting
3	Kvaternionové algebry a jednotky / Quaternion algebras and units Mišlanová, Kristína January 2021 (has links) The aim of this work is to study the Hamiltonian quaternions H and quaternion alge- bras. The first two chapters are based on the article Quaternion algebras by K. Conrad and the rest on the book Quaternion algebras by J. Voight. In the beginning, we mainly develop the theory about quaternions, quaternion algebras and study equivalent condi- tions for being a split or non-split quaternion algebra. After that, we also characterize, up to isomorphism, quaternion algebras over several fields such as R, C or Fp. In the third chapter, the thesis deals with orders in quaternion algebras, especially Lipschitz and Hurwitz order. The fourth chapter is dedicated to the relationship between unit quaternions and rotations in R3 , thanks to which we can characterize finite subgroups of H1 , or equivalently H× . This result will be used in the last chapter, where we are mainly focused on the problem of characterization of the group of units in orders in Hamiltonian quaternions. 1
4	Tópicos de álgebras alternativas / Topics in Alternative Algebras Munhoz, Marcos 23 February 2007 (has links) São estudados alguns aspectos das álgebras alternativas, como o bar-radical de uma álgebra bárica alternativa e as identidades de grau 4 e 5 nas álgebras de Cayley-Dickson. Neste estudo fazemos uso da decomposição de Peirce e de diversas propriedades importantes das álgebras alternativas. Concluímos mostrando que as únicas identidades de grau 4 são as triviais e as de grau 5 são conseqüência de outras duas identidades conhecidas / We studied some aspects of alternative algebras, in special the bar radical of an alternative baric algebra and identities of degree 4 and 5 of Cayley-Dickson algebras. We made significant use of the Peirce decomposition and several properties of the alternative algebras, in order to show that the only identities of degree four are the trivial ones, and the identities of degree five are consequences of other two known identities. álgebra de Cayley-Dickson álgebra dos Quatérnios Álgebras alternativas álgebras báricas alternative algebras bar-radical bar-radical baric algebras Cayley-Dickson algebras decomposição de Peirce identidades identities Peirce decomposition Quaternion algebras
5	Tópicos de álgebras alternativas / Topics in Alternative Algebras Marcos Munhoz 23 February 2007 (has links) São estudados alguns aspectos das álgebras alternativas, como o bar-radical de uma álgebra bárica alternativa e as identidades de grau 4 e 5 nas álgebras de Cayley-Dickson. Neste estudo fazemos uso da decomposição de Peirce e de diversas propriedades importantes das álgebras alternativas. Concluímos mostrando que as únicas identidades de grau 4 são as triviais e as de grau 5 são conseqüência de outras duas identidades conhecidas / We studied some aspects of alternative algebras, in special the bar radical of an alternative baric algebra and identities of degree 4 and 5 of Cayley-Dickson algebras. We made significant use of the Peirce decomposition and several properties of the alternative algebras, in order to show that the only identities of degree four are the trivial ones, and the identities of degree five are consequences of other two known identities. álgebra de Cayley-Dickson álgebra dos Quatérnios Álgebras alternativas álgebras báricas bar-radical decomposição de Peirce identidades alternative algebras bar-radical baric algebras Cayley-Dickson algebras identities Peirce decomposition Quaternion algebras

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