Bonn, Universiẗat, Diss., 2006.

Thesis--Tübingen, 1970. / Vita. Includes bibliographical references (p. 100-101).

München, Univ., Diss., 2004. / Computerdatei im Fernzugriff.

Freiburg (Breisgau), Universiẗat, Diss., 2003.

The Minkowski product can be viewed as a higher dimensional version of interval arithmetic. We discuss a collection of geometric constructions based on the Minkowski product and on one of its natural generalizations, the quaternion action. We also will present some topological facts about these products, and discuss the applications of these constructions to computer aided geometric design.

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.

Thesis (Ph.D.) -- University of Adelaide, Dept. of Pure Mathematics, 1982. / Typescript (photocopy).

[pt] Em [23] são apresentadas igualdades e desigualdades isoperimétricas relacionadas à Cáustica de Wigner (CW) e ao Conjunto de Medida de Largura Constante (CMLC). Neste trabalho nós estendemos estes resultados para planos normados com bolas unitárias quadraticamente convexas ou bolas unitárias poligonais. Estes conjuntos CW e CMLC estão fortemente relacionados às ciclóides, que são curvas cujas funções suporte generalizam a base de Fourier ( [6], [7]). Uma característica importante deste trabalho é a analogia direta entre os casos contínuo e discreto. / [en] In [23], some isoperimetric equalities and inequalities related to the Wigner Caustic (WC) and the Constant Width Measure Set (CWMS) are proved. In this work, we generalize these results to normed planes with quadratically convex unitary ball or polygonal unitary balls. The WC and CWMS are closely related to cycloids, which are curves whose support functions generalize the Fourier basis ( [6], [7]). An important aspect of our work is the direct analogy between the smooth and discrete cases.

No description available.

En este trabajo presentamos AG(4, 1), el álgebra geométrica del espacio-tiempo de Minkowski R4,1, adaptando el caso euclidiano tridimensional. En este contexto AG(4, 1) contiene una subálgebra, AG(4, 1)+, isomorfa a AG(3), y esto permite obtener varios resultados interesantes. Palabras claves: PRODUCTO GEOMÉTRICO, ÁLGEBRA GEOMÉTRICA, ESPACIO-TIEMPO DE MINKOWSKI, SUBÁLGEBRA PAR. / --- This work introduce AG(4, 1), the geometric algebra of Minkowski space-time R 4,1 , adapting the euclidean three dimensional case. In this context AG(4, 1) contain a subalgebra, AG(4, 1)+, isomorphic to AG(3), and this permit to obtain many interesting resoults. Key words: GEOMETRIC PRODUCT, GEOMETRIC ALGEBRA, MINKOWSKI SPACE-TIME, EVEN SUBÁLGEBRA