Discrete Gliding Along Principal Curves

Details Discrete Gliding Along Principal Curves Discrete Gliding Along Principal Curves

2010-04-08

arxiv.org/abs/1004.1259v1

J. Geom. Graphics, 14(2):171-180, 2010

Mathematics

Differential Geometry

Scientific paper

We consider $n$-dimensional discrete motions such that any two neighbouring positions correspond in a pure rotation ("rotating motions"). In the Study quadric model of Euclidean displacements these motions correspond to quadrilateral nets with edges contained in the Study quadric ("rotation nets"). The main focus of our investigation lies on the relation between rotation nets and discrete principal contact element nets. We show that every principal contact element net occurs in infinitely many ways as trajectory of a discrete rotating motion (a discrete gliding motion on the underlying surface). Moreover, we construct discrete rotating motions with two non-parallel principal contact element net trajectories. Rotation nets with this property can be consistently extended to higher dimensions.

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