1. The Centroid-Deformation Decomposition for Buoyant Vortex Patch Motion

   • Banavara N. Shashikanth
   • Rangachari Kidambi

   OriginalPaper 06 December 2021 Pages: 577 - 599

   

2. Helical Contour Dynamics

   • Tianyi Chu
   • Stefan G. Llewellyn Smith

   OriginalPaper 06 December 2021 Pages: 600 - 617

   

3. The Interaction of Two Unsteady Point Vortex Sources in a Deformation Field in 2D Incompressible Flows

   • Armand Vic
   • Xavier Carton
   • Jonathan Gula

   OriginalPaper 06 December 2021 Pages: 618 - 646

   

4. Integrals of Circulatory Systems Which are Quadratic in Momenta

   • Valery V. Kozlov

   OriginalPaper 06 December 2021 Pages: 647 - 657

   

5. Qualitative Analysis of the Dynamics of a Balanced Circular Foil and a Vortex

   • Ivan A. Bizyaev
   • Ivan S. Mamaev

   OriginalPaper 06 December 2021 Pages: 658 - 674

   

6. Dynamics of a Circular Cylinder and Two Point Vortices in a Perfect Fluid

   • Sergey M. Ramodanov
   • Sergey V. Sokolov

   OriginalPaper 06 December 2021 Pages: 675 - 691

   

7. Exact Solutions to the Beltrami Equation with a Non-constant \(\alpha({\bf x})\)

   • Oleg Bogoyavlenskij
   • Yuyang Peng

   OriginalPaper 06 December 2021 Pages: 692 - 699

8. Classification of Perturbations of Diophantine \(\mathbb{Z}^{m}\) Actions on Tori of Arbitrary Dimension

   • Boris Petković

   OriginalPaper 06 December 2021 Pages: 700 - 716

9. Spatiotemporal Pattern Formation in a Ring of Chua’s Oscillators

   • Giuseppe Alì
   • Eleonora Bilotta
   • Francesco Valentini

   OriginalPaper 06 December 2021 Pages: 717 - 731

   

10. Existence of a Smooth Hamiltonian Circle Action near Parabolic Orbits and Cuspidal Tori

    • Elena A. Kudryavtseva
    • Nikolay N. Martynchuk

    OriginalPaper 06 December 2021 Pages: 732 - 741

    

11. Strongly Reversible Flows on Connected Manifolds

    • Khadija Ben Rejeb

    OriginalPaper 06 December 2021 Pages: 742 - 755

12. Expansiveness and Hyperbolicity in Convex Billiards

    • Mário Bessa
    • João Lopes Dias
    • Maria Joana Torres

    OriginalPaper 06 December 2021 Pages: 756 - 762

13. The Time Evolution of the Trajectories After the Selectivity in a Symmetric Potential Energy Surface with a Post-transition-state Bifurcation

    • Douglas Haigh
    • Matthaios Katsanikas
    • Stephen Wiggins

    OriginalPaper 06 December 2021 Pages: 763 - 774

    

14. A Particular Integrable Case in the Nonautonomous Problem of a Chaplygin Sphere Rolling on a Vibrating Plane

    • Alexander A. Kilin
    • Elena N. Pivovarova

    OriginalPaper 06 December 2021 Pages: 775 - 786