Zigzag duocomb

The  is a regular skew apeirohedron in 4-dimensional Euclidean space. It can be constructed as the comb product of two zigzags or as a blend of the square tiling with a square.

Vertex coordinates
The vertex coordinates of a with unit edge length can be given as:


 * $$(\sqrt{2}i+m,\sqrt{2}j+n,m,n)$$

where $$i,j\in\mathbb{Z}$$ and $$m,n\in\left\{0,\sqrt{2}/2\right\}$$.