document.write("«&nbsp;<a href='/news/view?id=76346'>A calculus for flow categories. (arXiv:1710.01798v1 [math.GT])</a>");document.write(" | ");document.write("<a href='/news/view?id=76348'>A comparison of control strategies applied to a pricing problem in retail. (arXiv:1710.02044v1 [math.OC])</a>&nbsp;»");