document.write("«&nbsp;<a href='/news/view?id=59853'>Velodyne Announces a Solid-State Lidar</a>");document.write(" | ");document.write("<a href='/news/view?id=59855'>Vertex-weighted graphs and freeness of $ \psi $-graphical arrangements. (arXiv:1511.04853v3 [math.CO] UPDATED)</a>&nbsp;»");