document.write("«&nbsp;<a href='/news/view?id=75083'>Boeing offers $1 million prize for inventing a personal flying machine</a>");document.write(" | ");document.write("<a href='/news/view?id=75085'>Bounds on the Pure Point Spectrum of Lattice Schr\"odinger Operators. (arXiv:1709.09200v1 [math-ph])</a>&nbsp;»");