Morozov, Albert D.; Morozov, Kirill E. Degenerate resonances and synchronization in nearly Hamiltonian systems under quasi-periodic perturbations. (English) Zbl 1512.70020 Regul. Chaotic Dyn. 27, No. 5, 572-585 (2022). MSC: 70H09 70K65 PDFBibTeX XMLCite \textit{A. D. Morozov} and \textit{K. E. Morozov}, Regul. Chaotic Dyn. 27, No. 5, 572--585 (2022; Zbl 1512.70020) Full Text: DOI
Gonera, Cezary; Gonera, Joanna; Lucas, Javier de; Szczesek, Wioletta; Zawora, Bartosz M. More on superintegrable models on spaces of constant curvature. (English) Zbl 1507.37076 Regul. Chaotic Dyn. 27, No. 5, 561-571 (2022). MSC: 37J35 37J39 70H06 PDFBibTeX XMLCite \textit{C. Gonera} et al., Regul. Chaotic Dyn. 27, No. 5, 561--571 (2022; Zbl 1507.37076) Full Text: DOI arXiv
Meyer, Kenneth R.; Schmidt, Dieter S. Normal forms for Hamiltonian systems in some nilpotent cases. (English) Zbl 1507.37084 Regul. Chaotic Dyn. 27, No. 5, 538-560 (2022). MSC: 37J40 37J25 37J37 PDFBibTeX XMLCite \textit{K. R. Meyer} and \textit{D. S. Schmidt}, Regul. Chaotic Dyn. 27, No. 5, 538--560 (2022; Zbl 1507.37084) Full Text: DOI
Koudjinan, Comlan E.; Kaloshin, Vadim On some invariants of Birkhoff billiards under conjugacy. (English) Zbl 1507.37035 Regul. Chaotic Dyn. 27, No. 5, 525-537 (2022). MSC: 37C83 37J35 37J39 PDFBibTeX XMLCite \textit{C. E. Koudjinan} and \textit{V. Kaloshin}, Regul. Chaotic Dyn. 27, No. 5, 525--537 (2022; Zbl 1507.37035) Full Text: DOI arXiv
Rodrigues, Adriano Regis; Castilho, César; Koiller, Jair On the linear stability of a vortex pair equilibrium on a Riemann surface of genus zero. (English) Zbl 1507.37081 Regul. Chaotic Dyn. 27, No. 5, 493-524 (2022). MSC: 37J39 37J35 37J38 70H14 70K20 PDFBibTeX XMLCite \textit{A. R. Rodrigues} et al., Regul. Chaotic Dyn. 27, No. 5, 493--524 (2022; Zbl 1507.37081) Full Text: DOI