1. The theory of figures of Clairaut with focus on the gravitational modulus: inequalities and an improvement in the Darwin–Radau equation

   • Clodoaldo Ragazzo

   Original Paper 28 January 2020 Pages: 1 - 48

   

2. Limit cycles for two classes of control piecewise linear differential systems

   • Jaume Llibre
   • Regilene D. Oliveira
   • Camila Ap. B. Rodrigues

   Original Paper 17 January 2020 Pages: 49 - 65

3. Combinatorial micro–macro dynamical systems

   • Rafael Díaz
   • Sergio Villamarín

   Original Article 29 August 2018 Pages: 66 - 122

   

4. Invariant solutions for gradient Ricci almost solitons

   • Benedito Leandro
   • Romildo Pina
   • Tatiana Pires Fleury Bezerra

   Original Paper 14 January 2020 Pages: 123 - 138

5. A classification of small operators using graph theory

   • Terrence Bisson
   • Jonathan Lopez

   Original Article 15 October 2018 Pages: 139 - 151

   

6. Isomorphism invariants for linear quasigroups

   • Jonathan D. H. Smith
   • Stefanie G. Wang

   Original Article 09 April 2019 Pages: 152 - 164

7. Nearly Frobenius structures in some families of algebras

   • Dalia Artenstein
   • Ana González
   • Gustavo Mata

   Original Article 06 January 2020 Pages: 165 - 184

8. Big lattices of module classes induced by preradicals

   • Erwin Cerda-León
   • Hugo Rincón-Mejía

   Original Paper 12 December 2019 Pages: 185 - 206

   

9. Gelfand–Kirillov dimension for rings

   • Oswaldo Lezama
   • Helbert Venegas

   Original Paper 24 April 2020 Pages: 207 - 222

10. Continuity of the flow and robustness for evolution equations with non globally Lipschitz forcing term

    • Jacson Simsen
    • Mariza Stefanello Simsen
    • Marcos Roberto Teixeira Primo

    Original Article 30 April 2019 Pages: 223 - 241

11. Complex Bohnenblust–Hille inequality whose monomials have indices in an arbitrary set

    • Fernando C. Alves
    • Diana Marcela Serrano-Rodríguez

    Original Paper 18 February 2020 Pages: 242 - 248

12. On the apparatus of differentiation DI–DV for posets

    • Agustín Moreno Cañadas
    • Veronica Cifuentes Vargas

    Original Article 10 January 2019 Pages: 249 - 286

    

13. An improved error bound on the boundary inversion for a sideways heat equation

    • Zhenming Zheng
    • Zhenping Li
    • Xiangtuan Xiong

    Original Article 20 September 2018 Pages: 287 - 300

    

14. Measure zero stability problem of a generalized quadratic functional equation

    • Iz-iddine EL-Fassi
    • Samir Kabbaj
    • Abdellatif Chahbi

    Original Article 20 November 2019 Pages: 301 - 311

15. Rings with modules having a restricted injectivity domain

    • Yılmaz Mehmet Demirci
    • Burcu Nişancı Türkmen
    • Ergül Türkmen

    Original Paper 30 September 2019 Pages: 312 - 326

16. Investigation of the spectrum of singular Sturm–Liouville operators on unbounded time scales

    • Bilender P. Allahverdiev
    • Hüseyin Tuna

    Original Article 25 June 2019 Pages: 327 - 340

17. On two extensions of the classical zero-divisor graph

    • Malik Bataineh
    • Driss Bennis
    • Fouad Taraza

    Original Article 17 October 2019 Pages: 341 - 350

    

18. Weakly left cancellative semirings with derivations

    • Vincenzo DE Filippis
    • Abdellah Mamouni
    • Lahcen Oukhtite

    Original Article 09 September 2019 Pages: 351 - 360

19. Weak T-coalgebra DT(H) and its representation category

    • Ling Jia

    Original Article 02 January 2019 Pages: 361 - 380

20. Existence and uniqueness of positive solutions for first-order nonlinear Liouville–Caputo fractional differential equations

    • Abdelouaheb Ardjouni
    • Ahcene Djoudi

    Original Paper 06 September 2019 Pages: 381 - 390

21. An elementary heuristic for Hardy–Littlewood extended Goldbach’s conjecture

    • Christian Táfula

    Survey 27 August 2019 Pages: 391 - 405