TY JOUR TI Nonlinear physics in the navy Part 4 KW instability KW single-product mathematical model of economic formation transformation in Russia KW import substitution KW scientific– technical and socio–political world progress KW Kuznets and Kondratiev waves KW nonlinear phenomena KW separatrix KW above separatrix trajectory KW Lagrangian and Hamiltonian of scientific – technical and socio –political world progress KW logistics chains KW cultural evolution Humanity KW phase portrait KW separatrix KW catastrophes in the economy KW catastrophe of the fold KW catastrophe of the collection KW catastrophe of the multiple fold JO Fisheries AU Gaydenok, N.D. PY 2022 IS 2022 PB FSBI "TSUREN"