document.write("« Adaptive PBDW approach to state estimation: noisy observations; user-defined update spaces. (arXiv:1712.09594v1 [math.NA])");document.write(" | ");document.write("Alcuin's Propositiones de Civitatibus: the Earliest Packing Problems. (arXiv:1308.0892v2 [math.HO] UPDATED) »");