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• Existence and Multiplicity of Positive Solutions for a Singular Nonlinear High Order Fractional Differential Problem with Multi-Point Boundary Conditions

  Di Wang, Jiqiang Jiang

  2024-04-10

  19400 2190 Pages:603-616 Open-access

• Global Phase Portraits of Symmetrical Cubic Hamiltonian Systems with a Nilpotent Singular Point

  Huiyang Zhang, Aiyong Chen

  2024-04-10

  22450 2685 Pages:193-205 Open-access

• Eigenvalues of Fourth-Order Singular Sturm-Liouville Boundary Value Problems

  Lina Zhou, Weihua Jiang, Qiaoluan Li

  2024-04-10

  22137 2534 Pages:485-493 Open-access

• The Center Conditions and Hopf Cyclicity for a 3D Lotka-Volterra System

  Qinlong Wang, Jingping Lu, Wentao Huang, Bo Sang

  2024-04-09

  24882 2754 Pages:1-12 Open-access

• Bi-Center Problem in a Class of $Z_2$-Equivariant Quintic Vector Fields

  Hongwei Li, Feng Li, Pei Yu

  2024-04-09

  22144 2633 Pages:57-78 Open-access

• Vector Fixed Point Theorem with Application to Systems of Nonlinear Elastic Beams Equations

  H. El Bazi, A. Sadrati

  2025-04-23

  2988 642 Pages:720-738 Open-access

• A Family of Variable Step-Size Meshes Fourth-Order Compact Numerical Scheme for (2+1)-Dimensions Burger’s-Huxley, Burger’s-Fisher and Convection-Diffusion Equations

  Navnit Jha, Madhav Wagley

  2024-04-10

  19845 2262 Pages:245-276 Open-access

• Global Structure of Planar Quadratic Semi-Quasi-Homogeneous Polynomial Systems

  Zecen He, Haihua Liang

  2024-04-09

  22553 2497 Pages:561-572 Open-access

• Three Weak Solutions for ($p(x)$,$q(x)$)-Biharmonic Problem with Hardy Weight with Two Parameters

  Ibrahim Chamlal, Mohamed Talbi, Najib Tsouli, Mohammed Filali

  2025-06-03

  2681 543 Pages:823-839 Open-access

• Limit Cycles in a Two-Species Reaction

  Brigita Ferčec, Ilona Nagy, Valery G. Romanovski, Gábor Szederkényi, János Tόth

  2024-04-10

  22350 2633 Pages:283-300 Open-access