In this paper, we make use of the Sobolev space W 1,1 (R +, R n) to derive at once the Pontryagin conditions for the standard optimal growth model in continuous time, including a necessary and sufficient transversality condition. An application to the Ramsey model is given. We use an order ideal...

We provide sufficient conditions on the objective functional and the constraint functions under which the Lagrangean can be represented by a l'1 sequence of multipliers in infinite horizon discrete time optimal growth models