%0 Journal Article
%T Lines Tangent to 2n-2 spheres in R^n
%A Frank Sottile
%A Thorsten Theobald
%J Mathematics
%D 2001
%I arXiv
%X We show that there are 3 \cdot 2^(n-1) complex common tangent lines to 2n-2 general spheres in R^n and that there is a choice of spheres with all common tangents real.
%U http://arxiv.org/abs/math/0105180v2