La question de l'ideologie est peu etudiee par les economistes, qui preferent croire leur science immunisee contre le biais ideologique. Pourtant, il suffit de revenir auc sources de cette croyance pour redecouvrir l'inexorable dilemme lie a la conception marxienne de l'ideologie. Rien n'oblige...

For more than one decade, Hayek's theory of cultural evolution has been the object of a double controversy, with scientific and philosophical aspects. What is in discussion is nothing less than the existence of inner contradictions in the work of the Austrian Nobel prize winner. Apparently...

Simplex is a geometric figure which is extensively used in economic theory. Depending on the needs of the theory, a simplex S is sometimes cut with a hyperplane H, which separates it into two parts T and T'. It may be useful to appreciate the manner in which the simplex in cut. One mode of...

La question de l'ideologie est peu debattue par les economistes. Peut-etre considerent-ils que Schumpeter l'a definitivement tranchee en affirmant qu'il suffit de mettre en exergue la "vision" d'un auteur pour pouvoir departager, dans sa pensee, ce qui est du a l'ideologie et ce qui revient a la...

This paper proposes a new kind of asymmetric GARCh where the conditional variance obeys two different regimes with a smooth transition function. In one formulation variance reacts differently to negative and positive shocks while a second formulation, small and big shocks have separate effects.