1. Swallowtail, Whitney Umbrella and Convex Hulls

   • Vyacheslav D. Sedykh

   OriginalPaper 25 August 2020 Pages: 1 - 17

   

2. Singularities of Singular Solutions of First-Order Differential Equations of Clairaut Type

   • Kentaro Saji
   • Masatomo Takahashi

   OriginalPaper 30 August 2020 Pages: 19 - 41

   

3. Diffusive Epidemiological Predator–Prey Models with Ratio-Dependent Functional Responses and Nonlinear Incidence Rate

   • Kwangjoong Kim
   • Wonhyung Choi
   • Inkyung Ahn

   OriginalPaper 12 September 2020 Pages: 43 - 57

4. Generalized Compactness for Finite Perimeter Sets and Applications to the Isoperimetric Problem

   • Abraham Enrique Muñoz Flores
   • Stefano Nardulli

   OriginalPaper 22 October 2020 Pages: 59 - 69

5. Decay Results for a Viscoelastic Problem with Nonlinear Boundary Feedback and Logarithmic Source Term

   • Mohammad M. Al-Gharabli
   • Adel M. Al-Mahdi
   • Salim A. Messaoudi

   OriginalPaper 03 November 2020 Pages: 71 - 89

6. Integrability Conditions of a Weak Saddle in a Complex Polynomial Differential System

   • Jaume Giné
   • Claudia Valls

   OriginalPaper 06 November 2020 Pages: 91 - 108

7. Riemann-Hilbert Boundary Value Problem with Piecewise Constant Transition Function

   • G. Giorgadze
   • G. Gulagashvili

   OriginalPaper 09 November 2020 Pages: 109 - 119

8. Bifurcations of Zeros in Translated Families of Functions and Applications

   • P. Mardešić
   • D. Marín
   • J. Villadelprat

   OriginalPaper 09 November 2020 Pages: 121 - 150

   

9. Stronger Forms of Sensitivity in the Dynamical System of Abelian Semigroup Actions

   • V. Renukadevi
   • S. Tamilselvi

   OriginalPaper 10 January 2021 Pages: 151 - 162

10. Global Large Solutions to the Cauchy Problem of Planar Magnetohydrodynamics Equations with Temperature-Dependent Coefficients

    • Zhaoyang Shang

    OriginalPaper 19 January 2021 Pages: 163 - 205

11. Stokes Matrices of a Reducible Double Confluent Heun Equation via Monodromy Matrices of a Reducible General Huen Equation with Symmetric Finite Singularities

    • Tsvetana Stoyanova

    OriginalPaper 27 August 2021 Pages: 207 - 245

    

12. Correction to : Stokes Matrices of a Reducible Double Confluent Heun Equation via Monodromy Matrices of a Reducible General Huen Equation with Symmetric Finite Singularities

    • Tsvetana Stoyanova

    Correction 10 November 2021 Pages: 247 - 248