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Dissertation discussion

Quadratic stochastic dynamical systems of the type $(\sigma |\mu)$ (PhD dissertation discussion)

S. S. Khudayarov

Bukhara State University

Abstract: The thesis is devoted to investigation of the dynamical systems generated by stochastic and non-stochastic cubic matrices.
Basic results of the research are as follows:
  • Necessary and sufficient conditions to coefficients of the of quadratic operator to map the simplex ${{S}^{m-1}}$ to itself are found.
  • All fixed points of discrete and continuous-time quadratic stochastic and non-stochastic operators defined in the simplex were found and the limit points of the trajectory were studied.
  • The dynamics of a one-dimensional quadratic non-stochastic operator is studied in general. Conditions for the parameters of the one-dimensional quadratic nonstochastic operator to form a chaotic dynamical system are given.
  • For a class of two-dimensional quadratic non-stochastic operators it is shown that among two-dimensional quadratic non-stochastic operators in particular, there are those that form a chaotic dynamical system and those that do not form a chaotic dynamical system.
  • Some multiplication operations for cubic matrices are introduced, and a family of matrices satisfying the Kolmogorov-Chapman equation for these multiplications is determined.
  • Several examples of quadratic stochastic processes of type $(\sigma |D)$ have been constructed.


Website: https://us02web.zoom.us/j/8022228888?pwd=b3M4cFJxUHFnZnpuU3kyWW8vNzg0QT09


© Steklov Math. Inst. of RAS, 2024