By Antonio Fasano (Dipartimento di Matematica, Universita di Firenze), Stefano Marmi (Scuola Normale Superiore, Pisa), Beatrice Pelloni (Department of Mathematics, University of Reading)
By Kenichi Konishi (Department of Theoretical Physics, University of Pisa and INFN, Pisa), Giampiero Paffuti (Department of Theoretical Physics