Abstract
A classical problem of Boolean theory is to derive a disjointed Sum of Prod-ucts. This work introduces a novel approach for converting Sum of Products into dis-jointed Sum of Products which is based on a novel, generally valid, combining technique of 'orthogonalizing difference-building ?'. Postulates and rules for this linking technique are defined which have to be considered getting correct results. The benefit of the novel approach is that the result contains fewer number of product terms which has significant advantages for further calculations as the Boolean Differential Calculus.