document.write("«&nbsp;<a href='/news/view?id=148944'>CERN wants to build a particle collider that’s four times bigger than the LHC</a>");document.write(" | ");document.write("<a href='/news/view?id=148946'>Characterizations of certain means of positive operators. (arXiv:1901.05504v1 [math.FA])</a>&nbsp;»");