Перегляд за автором "Kirichuka, A."

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  • Kirichuka, A. (Нелінійні коливання, 2014)
    We consider a Hamilton system related to the Trott curve in Harnack’s theorem. This theorem says that the maximal number of ovals for the fourth order curve is four. We treat the related Hamilton system which has more ovals ...
  • Kirichuka, A. (Нелінійні коливання, 2017)
    We consider two-point boundary-value problems for Hamiltonian system of the form x' = f(k, y), y' = g(x, λ), where k and λ are parameters. We estimate the number of solutions, both positive and oscillatory, for the ...