Nikitina, N. V.; Talimonova, O. Yu. Bifurcations of coupled nonlinear oscillators with similar kinematics. (Russian. English summary) Zbl 1449.37026 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2020, No. 1, 33-38 (2020). MSC: 37D45 37G10 34C15 PDFBibTeX XMLCite \textit{N. V. Nikitina} and \textit{O. Yu. Talimonova}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2020, No. 1, 33--38 (2020; Zbl 1449.37026) Full Text: DOI
Nikitina, N. V. On motions in a small neighbourhood of zero of a multidimensional system. (Russian. English summary) Zbl 1413.34130 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2018, No. 6, 49-57 (2018). MSC: 34C05 34D45 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2018, No. 6, 49--57 (2018; Zbl 1413.34130) Full Text: DOI
Nikitina, N. V. The principle of symmetry in three-dimensional systems. (Russian. English summary) Zbl 1389.34112 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2017, No. 7, 21-28 (2017). MSC: 34C14 34D45 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2017, No. 7, 21--28 (2017; Zbl 1389.34112) Full Text: DOI
Nikitina, N. V. Connection of the topology of a system in variations with the character of attractors. (Russian. English summary) Zbl 1363.34191 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2016, No. 5, 43-49 (2016). MSC: 34D45 37D45 34C23 34D20 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2016, No. 5, 43--49 (2016; Zbl 1363.34191) Full Text: DOI
Nikitina, N. V. About Lyapunov characteristic indices. (Russian. English summary) Zbl 1340.37054 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2015, No. 8, 64-71 (2015). MSC: 37D45 37G10 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2015, No. 8, 64--71 (2015; Zbl 1340.37054) Full Text: DOI
Nikitina, N. V. About the motions close to synchronous ones of a charged particle in an electromagnetic wave. (Russian. English summary) Zbl 1313.78019 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 11, 53-57 (2014). MSC: 78A35 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 11, 53--57 (2014; Zbl 1313.78019) Full Text: DOI
Nikitina, N. V. About the existence of a homoclinic trajectory with symmetry in three-dimensional systems. (Russian. English summary) Zbl 1313.37016 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 7, 68-75 (2014). MSC: 37C29 37C80 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2014, No. 7, 68--75 (2014; Zbl 1313.37016) Full Text: DOI
Nikitina, N. V. On the closing conditions of a trajectory in the three-dimensional space. (Russian. English summary) Zbl 1289.34111 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2013, No. 7, 72-77 (2013). MSC: 34C25 70K20 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2013, No. 7, 72--77 (2013; Zbl 1289.34111)
Nikitina, N. V. About bifurcations and analytical solution in the Rikitake model. (Russian. English summary) Zbl 1289.37047 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2012, No. 10, 56-63 (2012). MSC: 37N20 37D45 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2012, No. 10, 56--63 (2012; Zbl 1289.37047)
Nikitina, N. V. On the principle of skew-symmetry. (Russian. English summary) Zbl 1164.70326 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2008, No. 2, 69-72 (2008). MSC: 70F40 34C28 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2008, No. 2, 69--72 (2008; Zbl 1164.70326)
Nikitina, N. V. Random oscillations of a bistable oscillator under periodic perturbations. (Russian. English summary) Zbl 1150.34512 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2007, No. 12, 64-70 (2007). MSC: 34F05 34C15 70K55 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2007, No. 12, 64--70 (2007; Zbl 1150.34512)
Nikitina, N. V. On the construction of the phase portrait of a bistable oscillator. (Russian. English summary) Zbl 1127.34321 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2006, No. 10, 59-64 (2006). MSC: 34C15 34C25 34D40 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2006, No. 10, 59--64 (2006; Zbl 1127.34321)
Nikitina, N. V. On the construction of the domains of saddle and periodic trajectories. (Russian. English summary) Zbl 1097.70526 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2006, No. 5, 58-64 (2006). MSC: 70K42 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2006, No. 5, 58--64 (2006; Zbl 1097.70526)
Nikitina, N. V. On unstable oscillations of a star. (Russian. English summary) Zbl 1077.85500 Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2004, No. 3, 56-61 (2004). MSC: 85A15 34C15 PDFBibTeX XMLCite \textit{N. V. Nikitina}, Dopov. Nats. Akad. Nauk Ukr., Mat. Pryr. Tekh. Nauky 2004, No. 3, 56--61 (2004; Zbl 1077.85500)