We study a notion of well-posedness in vector optimization through the behaviour fo minimizing sequences of sets, defined in terms of Hausdorff set-convergence. We prove the involvement of strict efficiency, a refinement of the notion of efficiency, in the definition of well-posedness. Using the...

In this paper we introduce a generalized second-order Riemann-type derivative for C 1,1 vector functions and use it to establish necessary and sufficient optimality conditions for vector optimization problems. We show that these conditions are stronger than those obtained by means of the...

In this work we provide a characterization of C 1,1 functions on Rn (that is, differentiable with locally Lipschitz partial derivatives) by means of second directional divided differences. In particular, we prove that the class of C 1,1 functions is equivalent to the class of functions with...

This paper provides an operational procedure for putting indentifying restrictions on a simultaneous equations models. The algorithm works on the restrictions,not on the parameters, such that the identifying restrictions can be imposed before estimation.

This paper explores the relationship between techonological activity and export performance between 1985 and 1998 for nine large developing countries and twenty-five primary and secondary sectors. We use a structural decomposition analysis to show that developing countries tend to concentrate...

The publication of the second edition of Fratianni and Spinelli's monetary History of Italy offers the opportunity to analyze the causes behind the inflation pattern in Italy in the three decades preceding the entry of the country in the European Monetary Union. The two authors reconstruct the...

The aim of this paper is to describe the features of a monetary economy on the basis of Keynes's distinction between a real exchange economy and a monetary economy.As is well known, Keynes uses the former term to refer to an economy in which money is merely a tool to reduce the cost of exchanges...

In Italy, the recent gradual liberalization of the retail market has led to an increase in competition and innovation. In this context, new and more flexible forms of organization have emerged, and franchising in particular has undergone a strong expansion. The main purpose of this work is to...

In this note a mean value theorem for continuous vector functions is introduced by mollified derivatives and smooth approximations

We automate the process of finding the cointegration relations in a cointegrated VAR. There is a rigorous separation between the theory part (search directions must be defined, a final model chosen) and the automated search. The decision rules are set in such a way that a theoretical upper limit...