Abstract
Systems of five or more components cannot be represented in three‐dimensional space. In working with these multicomponent systems, a method must be devised where it is not necessary to visualize the system. A general equation for a system of any number of components is presented. The derivation of the constants by the use of a unity coefficient is demonstrated for hypothetical and for actual systems. Relationships in the quinary system Na2O–Fe2O3–Al2O3–SO2–CaO are derived and the transformation equations are discussed.

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