The article offers an analytical reconstruction of the criticism that O. Bauer leveled at R. Luxemburg's thesis about the accumulation of capital: the rise in the organic composition of capital requires capital movements between industries. The true meaning of this criticism then appears: by...

The price systems of the classical conceptual framework do not apparently need a concept of value, distinct from the concept of price. Though, recently, the treatment of certain questions within this framework has called for such a concept. This paper shows that: I) all these questions raise a...

We studied a sharp interface model issuing from a seawater intrusion problem in a confined aquifer. This model consists in a coupled system of an elliptic and a de-generate parabolic equation. The global in time existence is obtained in using Schauder theorem combined with parabolic...