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Minkowski Actions of Quaternion Sets and their ApplicationsSushkoff, Kira 01 May 2003 (has links)
Applications of Laguerre geometry to computer aided geometric design are presented, realized through Minkowski actions. Basic Laguerre geometry is first discussed. Then quaternions, set multiplication, and the use of quaternion sets to define Minkowski actions are described and used to achieve results used in geometric design.
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On laguerre geometry and generalized quadranglesPun, Ying, Anna., 潘瑛. January 2011 (has links)
published_or_final_version / Mathematics / Master / Master of Philosophy
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Superfícies mínimas de Laguerre e geometria isotrópica / Laguerre geoemtry surfaces and isotropic geometryReyes, Edwin Oswaldo Salinas 29 February 2016 (has links)
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Previous issue date: 2016-02-29 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / In this work we refer to the study of a new method and simple approach to minimal
surface Laguerre in isotropic model of Laguerre geometry as the bi-harmonic function
graph. We developed the isotropic geometry which studies the geometric properties
invariant under certain affine transformations in Euclidean space, and the fundamental
elements of Laguerre geometry which are spheres orienteds and plans orienteds, and
properties which are invariant on the transformation of Laguerre. In addition, we will
show a close relationship between minimal surfaces Laguerre spherical type and isotropic
minimal surfaces which are given by the graph of harmonic functions and minimal
Euclidean surfaces. Finally, the duality metric in the isotropic space is used to develop
an isotropic exchange for minimal surfaces Laguerre in certain Lie transformation of
Laguerre minimal surfaces in Euclidean space. / Neste trabalho nos referimos ao estudo de um novo método de desenvolvimento de
superfícies mínimas de Laguerre vista no modelo isotrópico da geometria de Laguerre
como o gráfico de funções bi-harmônicas. Desenvolvemos a geometria isotrópica a qual
estuda as propriedades geométricas invariantes por certas transformações afines no espaço
Euclidiano, os elementos fundamentais da geometria de Laguerre as quais são esferas
e planos orientados e as propriedades as quais são invariantes sobre as transformações
de Laguerre. Além disso, mostraremos uma relação fechada entre superfícies mínimas
de Laguerre do tipo esférico e superfícies mínimas isotrópicas as quais são dadas pelo
gráfico de funções harmônicas e superfícies mínimas Euclidianas. Finalmente, a métrica
dual no espaço isotrópico é utilizada para desenvolver uma contrapartida isotrópica de
superfícies mínimas de Laguerre em certas transformações de Lie de superfícies mínimas
de Laguerre no espaço Euclidiano.
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