Rotações em R^3 e R^4 e a Álgebra dos Quatérnios

• Ano de defesa: 2019
• Autor(a) principal: Araujo, Fausto Magno De [UNIFESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Rotation; Complex Numbers; Quaternions; Vector; Algebra; Rotação; Números Complexos; Quatérnios; Vetor; Álgebra
• Link de acesso: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=7668432; https://repositorio.unifesp.br/handle/11600/59437

In this work we will study the vector rotations in R^3 and R^4 through the Algebra of Quaternions, an extension of the set of complex numbers – C . The rotations of vectors in the plane (R^2) are described by the product of complex numbers of unitary module. Since the composition of rotations in R^3 is not commutative, it is necessary to establish another set whose product is not commutative, but be associative. This is the set of quaternions. Such a set is consistent with a space four dimensions, reason why it also describes rotations in R^4. In this work we will study rotations in the plane, the set of quaternions and rotations in R^3 and R^4. We will use a matrix formalism, whose manipulation is accessible to students from highschool. We will also present visual examples that can be used in the classroom.