On non-linear interaction of the products and the value added of sectors

An analysis of the dynamics of the products and value added of sectors was conducted in the article using their cyclic origin. The research has shown that in the proximity of the bending points of trophic functions of the ‘‘processing-supply” sectors’ outputs and prices the products of sectors qualitatively change the character of their dynamics. It is due to the creation of the new frequencies in their dynamics caused by the influence of sectors with which the sectors under study are interrelated.