Conchoid surfaces of spheres

Details Conchoid surfaces of spheres Conchoid surfaces of spheres

2011-11-04

arxiv.org/abs/1111.1110v2

Mathematics

Algebraic Geometry

Scientific paper

The conchoid of a surface $F$ with respect to given fixed point $O$ is roughly speaking the surface obtained by increasing the radius function with respect to $O$ by a constant. This paper studies {\it conchoid surfaces of spheres} and shows that these surfaces admit rational parameterizations. Explicit parameterizations of these surfaces are constructed using the relations to pencils of quadrics in $\R^3$ and $\R^4$. Moreover we point to remarkable geometric properties of these surfaces and their construction.

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