1. Confinement Strategies in a Simple SIR Model

   • Gilberto Nakamura
   • Basil Grammaticos
   • Mathilde Badoual

   OriginalPaper 21 December 2020 Pages: 509 - 521

   

2. Nondegenerate Hamiltonian Hopf Bifurcations in \(\omega:3:6\) Resonance \((\omega=1\) or \(2)\)

   • Reza Mazrooei-Sebdani
   • Elham Hakimi

   OriginalPaper 21 December 2020 Pages: 522 - 536

   

3. Highly Dispersive Optical Solitons of an Equation with Arbitrary Refractive Index

   • Nikolay A. Kudryashov

   OriginalPaper 21 December 2020 Pages: 537 - 543

   

4. Autotransforms for Some Differential Equations and Their Physical Applications

   • Oleg I. Bogoyavlenskij
   • Yuyang Peng

   OriginalPaper 21 December 2020 Pages: 544 - 552

5. The Tippedisk: a Tippetop Without Rotational Symmetry

   • Simon Sailer
   • Simon R. Eugster
   • Remco I. Leine

   OriginalPaper 21 December 2020 Pages: 553 - 580

   

6. Shape-invariant Neighborhoods of Nonsaddle Sets

   • Martin Shoptrajanov
   • Nikita Shekutkovski

   OriginalPaper 21 December 2020 Pages: 581 - 596

   

7. Quantifying the Transition from Spiral Waves to Spiral Wave Chimeras in a Lattice of Self-sustained Oscillators

   • Igor A. Shepelev
   • Andrei V. Bukh
   • Vadim S. Anishchenko

   OriginalPaper 21 December 2020 Pages: 597 - 615

   

8. Persistence of Hyperbolic-type Degenerate Lower-dimensional Invariant Tori with Prescribed Frequencies in Hamiltonian Systems

   • Junxiang Xu
   • Jiangong You

   OriginalPaper 21 December 2020 Pages: 616 - 650

9. Tangential Trapezoid Central Configurations

   • Pengfei Yuan
   • Jaume Llibre

   OriginalPaper 29 November 2020 Pages: 651 - 661

   

10. Rheonomic Systems with Nonlinear Nonholonomic Constraints: The Voronec Equations

    • Federico Talamucci

    OriginalPaper 21 December 2020 Pages: 662 - 673

11. Nonequilibrium Statistical Mechanics of Weakly Ergodic Systems

    • Valery V. Kozlov

    OriginalPaper 21 December 2020 Pages: 674 - 688

    

12. Dynamics of a Spherical Robot with Variable Moments of Inertia and a Displaced Center of Mass

    • Elizaveta M. Artemova
    • Yury L. Karavaev
    • Evgeny V. Vetchanin

    OriginalPaper 21 December 2020 Pages: 689 - 706

    

13. Dynamics of the Tippe Top on a Vibrating Base

    • Alexey V. Borisov
    • Alexander P. Ivanov

    OriginalPaper 21 December 2020 Pages: 707 - 715

    

14. On Topological Classification of Gradient-like Flows on an \(n\)-sphere in the Sense of Topological Conjugacy

    • Vladislav E. Kruglov
    • Dmitry S. Malyshev
    • Danila D. Shubin

    OriginalPaper 21 December 2020 Pages: 716 - 728

    

15. Stability and Stabilization of Steady Rotations of a Spherical Robot on a Vibrating Base

    • Alexander A. Kilin
    • Elena N. Pivovarova

    OriginalPaper 21 December 2020 Pages: 729 - 752