document.write("«&nbsp;<a href='/news/view?id=59456'>Explict $\ell^1$-efficient cycles and amenable normal subgroups. (arXiv:1704.05345v1 [math.GT])</a>");document.write(" | ");document.write("<a href='/news/view?id=59458'>Facebook Announces React Fiber, a Rewrite of Its React Framework</a>&nbsp;»");