The discussion centers on calculating the density of fluid using the Riedel Equation for vapor-liquid systems. The primary focus is on deriving a function to compute liquid phase density for numerical modeling. A reference is mentioned that suggests using critical properties of each component in the Riedel correlation from 1954, specifically as a function of temperature. However, the empirical function needed for these calculations is not provided in the reference, prompting the need for further clarification on how to implement the Riedel Equation effectively in this context.