Theses advances are much related to the development of appropriate numerical approaches.
Different approaches are possible to model complex endogenous dynamics.
The complex dynamics may result from local interactions in a disaggregated system this is the approach followed among others within the framework of the research programs on agent based economies or on Internet economic s . Independently of its origin, there is a need to develop methods allowing to cope with economic complexity. Here again, mastering the complexity typically implies using numerical methods. The workshop is dedicated to Siegmar Stoeppler , a most estimated colleague and friend of many of us, who pioneered dynamic and disaggregated thinking in Germany until his untimely death. The addressed topics should be of interest for theoretical and applied economists, researchers in finance, marketing, and insurance, as well as for epistemologists, mathematicians, computer scientists, specialists of numerical methods.