This paper analyses the evolution of trading relationships in a market in which trades take place bilaterally. Buyers reinforce their probability of visiting sellers as a function of the profitability of their past experience. Using the "mean field" approach it is shown that two distant types of...

In real markets, price adjustment and the matching of buyers and sellers involve considerable exchange of information. Previous experience is also important in partner selection and in the decision to accept a transaction. The dynamic processes involved can be described in terms taken from...

We introduce economic models based on Boolean Delay Equations: this formalism makes easier to take into account the complexity of the interactions between firms and is particularly appropriate for studying the propagation of an initial damage due to a catastrophe. Here we concentrate on simple...

Standard micro-economics concentrate on the description of markets but is seldom interested in production. Several economists discussed the concept of a firm, as opposed to an open labour market where entrepreneurs would recrute workers on the occasion of each business opportunity. Coase...