Resumen

BENITEZ, Alberto. La forma triangular de la matriz de Leontief. Econ: teor. práct [online]. 2009, n.30, pp.115-131. ISSN 2448-7481.

In this article, I present some comments related to the triangular form of Leontief's system. Among them, I propose an alternative proof of the equivalence between the existence of viable solutions to the model and the Hawkins and Simon's condition (H-S). In addition, I expose the peculiar economic significance of the coefficients in the principal diagonal of the triangular form of Leontief's matrix, which permits us, among other things, to appreciate the tight relation between the economic and the mathematical conditions in the solution to the model. Moreover, I identify some other mathematical propositions equivalent to (H-S) possessing economic interest.

Palabras llave : Leontief; Hawkins and Simon; input-output; non-negative matrices.