The formula of Fa`a Di Bruno provides a powerful tool to calculate the higher order derivative of a composite function. Unfortunately it has three weaknesses: it is not a recursive formula, it totally depends on the resolution of the diophantine equation and a change in the order...
Open access
Research Article10.9734/BJMCS/2016/23535
In this paper, we have determined the free energy of a binary alloy for any order and it is showed that the number of equilibrium states of the system is obtained by the Taylor expansion to the 4-th order choice. We explicitly determine the stable states of alloy which are charac...
Open access
Research Article10.9734/PSIJ/2016/29954
In the most of works, related to the thermal stability of superconductors maintained by cryogenics, the authors consider the milieu as a threadlike wire of an infinite length. The study of this unidimensional geometric milieu is characterized by some quantities of installation, t...
Open access
Research Article10.9734/BJMCS/2016/25585
The difficulty of the methods of decision aid is what seeking optimal solutions to complex problems in general and for nature multicriteria, or the concept of optimality is no sense in a multicriteria context. In this paper, we propose a mathematical modelling, in the context of...
Open access
Research Article10.9734/BJMCS/2016/23247