Semantic triangle by Gotlob Frege and semantic tetrahedron in philosophy of sense

The Semantic triangle by G. Frege assume as a basis the semantics of processes of getting sense of theoretical knowledge. The Frege's conception of semantic name of apexes of this triangle correspond, according to the author's concept of sense formations, to four parameters N, B, G, A sense definitions. Four independent directions N, B, G, A gave us four tops of coordinate tetrahedron of three-dimensional projective space. This tetrahedron is called Semantic tetrahedron of philosophy of sense.