1. On Singularly Perturbed Linear Cocycles over Irrational Rotations

   • Alexey V. Ivanov

   OriginalPaper 03 June 2021 Pages: 205 - 221

   

2. A Restricted Four-body Problem for the Figure-eight Choreography

   • Ricardo Lara
   • Abimael Bengochea

   OriginalPaper 03 June 2021 Pages: 222 - 235

   

3. Compactness and Index of Ordinary Central Configurations for the Curved \(N\)-Body Problem

   • Shuqiang Zhu

   OriginalPaper 03 June 2021 Pages: 236 - 257

   

4. On the Isolation/Nonisolation of a Cosymmetric Equilibrium and Bifurcations in its Neighborhood

   • Leonid G. Kurakin
   • Aik V. Kurdoglyan

   OriginalPaper 03 June 2021 Pages: 258 - 270

   

5. Lax Pairs and Rational Solutions of Similarity Reductions for Kupershmidt and Sawada – Kotera Hierarchies

   • Nikolay A. Kudryashov

   OriginalPaper 03 June 2021 Pages: 271 - 292

6. Generic Properties of Mañé’s Set of Exact Magnetic Lagrangians

   • Alexandre Rocha

   OriginalPaper 03 June 2021 Pages: 293 - 304

7. Recruitment Effects on the Evolution of Epidemics in a Simple SIR Model

   • Gilberto Nakamura
   • Basil Grammaticos
   • Mathilde Badoual

   OriginalPaper 03 June 2021 Pages: 305 - 319