Elnazarov A. A.
Ukr. Mat. Zh. - 2008. - 60, № 2. - pp. 183–191
We consider the problem of controllability in oscillation dynamical systems. A solution of the local control problem is obtained for one class of systems of differential equations. An example of application of the main results is given.
Ukr. Mat. Zh. - 1999. - 51, № 9. - pp. 1292–1295
We obtain conditions for the existence and smoothness of invariant tori of countable systems of differential equations with delay.
A method of asymptotic expansion of an m-parameter family of solutions for a quasilinear system of differential equations
Ukr. Mat. Zh. - 1998. - 50, № 3. - pp. 445–450
By using the method of asymptotic expansion of an m-parameter family of solutions, we obtain the asymptotic expansion of solutions of a quasilinear system of differential equations.
A criterion of exponential dichotomy for a countable system of differential equations with quasiperiodic coefficients
Ukr. Mat. Zh. - 1997. - 49, № 12. - pp. 1717–1722
We establish necesary and sufficient conditions for the exponential diehetemy with matrix projeseters of a countable system of differential equations with quasiperiodic coefficients.