Notes, Comments and Preliminary results Dec 12 2012 Andrea Loi and Stefano Matta   Structural stability and catastrophes.   Abstract  Contact Information  Citation  Full Text  -  Note   Jan 13 2012 Junichi Minagawa   On the instability of competitive equilibrium: a further example   Abstract  Contact Information  Citation  Full Text  -  Note   Apr 01 2010 Eisei Ohtaki   Sunspots, whether they are risk or uncertainty, cannot matter in the static Arrow-Debreu economy   Abstract  Contact Information  Citation  Full Text  -  Note