Solubility data of refrigerant/lubricant mixtures have been modeled with a cubic equation of state. The systems studied are binary mixtures of hydrofluorocarbons (R-32, R-125, R-134a and R-143a) and alkylbenzene oils (viscosity grades 15 and 32). These partially miscible mixtures are well correlated with the present model, which can be used for calculating the pressure-temperature-composition r...

In this paper, the nonlinear stability of a functional equation in the setting of non-Archimedean normed spaces is proved. Furthermore, the interdisciplinary relation among the theory of random spaces, the theory of non-Archimedean space, the and the theory of functional equations are also presented Key word: Hyers Ulam Rassias stability • cubic mappings • generalized normed space • Banach spac...

We analyze a technique for obtaining piecewise separable-variables conductivity functions, employing standard cubic polynomial interpolation. Our goal is to start making possible the practical use of the Pseudoanalytic Function Theory in medical imaging, by allowing the construction of numerical solutions, in terms of Taylor series in formal powers, of the twodimensional Electrical Impedance Eq...