EN
The subject of the present analysis is the notion of the common good. The elementary expression adopted here is “x participating in y as a” – symbolically: x E part (y,a) The basic system is elementary ontology enriched with axioms B1 –B4,which are an interpretation of Frege`s predication scheme (with specific axioms A1-A4). Functor D, which appears in the context x E Dya read as “x is common good y being a” is introduced by definition. The functor`s special cases D, and D,, appear in context x E D,ya and x E D,,ya, which are respectively read as “x is common good being a only for y”and “x is common good being a not only for y”. The phrases x E DW and x E y as D a are also considered and read respectively as: “x is common good” and “x is y as common good being a”. These phrases are special cases of the derelativization of the functor of common good from the x E Dya context.