document.write("« Estimation of recurrence for nilpotent group action. (arXiv:1810.05097v1 [math.GN])");document.write(" | ");document.write("Existence of Traveling Fronts and Pulses in Lateral Inhibition Neuronal Networks with Sigmoidal Firing Rate Functions. (arXiv:1810.05142v1 [math.DS]) »");