document.write("«&nbsp;<a href='/news/view?id=142873'>Expansion of coset graphs of PSL_2(F_p). (arXiv:1810.09925v1 [math.GR])</a>");document.write(" | ");document.write("<a href='/news/view?id=142875'>Facebook’s ex security boss: Asking Big Tech to police hate speech is “a dangerous path”</a>&nbsp;»");