document.write("«&nbsp;<a href='/news/view?id=85190'>Conflict-free connection of trees. (arXiv:1712.10010v1 [math.CO])</a>");document.write(" | ");document.write("<a href='/news/view?id=85192'>Control theory for the Burgers equation: Agrachev-Sarychev approach. (arXiv:1712.09807v1 [math.AP])</a>&nbsp;»");