document.write("« Multiplicity results and sign changing solutions of non-local equations with concave-convex nonlinearities. (arXiv:1603.05554v2 [math.AP] UPDATED)");document.write(" | ");document.write("New formulas counting one-face maps and Chapuy's recursion. (arXiv:1510.05038v5 [math.CO] UPDATED) »");