document.write("«&nbsp;<a href='/news/view?id=61651'>US Household Debt Surpasses 2008 High</a>");document.write(" | ");document.write("<a href='/news/view?id=61653'>Universal differentiability sets and maximal directional derivatives in Carnot groups. (arXiv:1705.05871v1 [math.FA])</a>&nbsp;»");