On the densest packing of polycylinders in any dimension
  Using transversality and a dimension reduction argument, a result of A. Bezdek and W. Kuperberg is applied to polycylinders $\mathbb{D}^2\times \mathbb{R}^n$, showing that the optimal packing density is $\pi/\sqrt{12}$ in any dimension. 
W\"oden Kusner
math.MG math.CO math.NT