Mathematical model of GDP growth under the influence of demographic changes in Russia and OECD countries

The article presents the possibilities of using economic and mathematical methods in the construction of predictive models of GDP growth, depending on the demographic changes in the country. Special attention is paid to the mathematical model, with the help of which it is possible to obtain predictive estimates that reveal the degree of influence of changes in the age structure of the population on the dynamics of GDP in the future in OECD countries and Russia.