J. Llibre, M. Mousavi.
Phase portraits of the Higgins-Selkov system.
Discrete Contin. Dyn. Syst. Ser. B, 27(1), 245-256. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, A. Nabavi.
Phase portraits of the Selkov model in the Poincaré disc.
Discrete Contin. Dyn. Syst. Ser. B, 27(12), 7607-7623. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. D. S. Oliveira.
On the limit cycle of a Belousov-Zabotinsky differential systems.
Math. Methods Appl. Sci., 45(2), 579-584. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, V. Pilyugina.
Polynomial homogeneous maps and their periods.
Journal of Nonlinear Modeling and Analysis, 4(4), 752-762. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, T. Salhi.
On the limit cycles of the piecewise differential systems formed by a linear focus or center and quadratic weak focus or center.
Chaos Solitons Fractals, 160, 112256. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, M. A. Teixeira.
Limit cycles in Filippov systems having a circle as switching manifold.
Chaos, 32, 053106. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, Y. Tian.
Meromorphic integrability of the Hamiltonian systems with homogeneous potentials of degree -4.
Discrete Contin. Dyn. Syst. Ser. B, 27(8), 4305-4316. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Phase portraits of uniform isochronous centers with homogeneous nonlinearities.
J. Dyn. Control Syst., 28, 319-332. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Global dynamics for the Szekeres system with non-zero cosmological constant.
Phys. Dark. Universe, 35, 100954:1-4. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Twin polynomial vector fields of arbitrary degree.
Bull. Braz. Math. Soc. (N.S.), 53, 295-306. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Crossing limit cycles for discontinuous piecewise differential systems formed by linear Hamiltonian saddles or linear centers separated by a conic.
Chaos Solitons Fractals, 159, 112076:1-8. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Phase portraits of the Leslie-Grower system.
Acta Math. Sin. (Engl. Ser.), 42B(5), 1734-1742. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Global centers of the generalized polynomial Liénard differential systems.
J. Differential Equations, 330, 66-80. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Non-existence and uniqueness of limit cycles in a class of generalized Liénard equations.
Bol. Soc. Mat. Mexicana, 28, 41:1-12. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
The improved Euler-Jacobi formula and the planar cubic polynomial vector fields in $R^2$.
Dyn. Syst., 37(3), 403-443. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Limit cycles of piecewise differential systems with linear Hamiltonian saddles and linear centres.
Dyn. Syst., 37(2), 262-279. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
The improved euler-Jacobi formula and the planar polynomial vector fields of degree 2-4.
Bull. Belg. Math. Soc. Simon Stevin, 29(1), 63-85. 2022. [DOI]
PreprintAbstract

D. Marín, J. Villadelprat.
The criticality of reversible quadratic centers at the outer boundary of its period annulus.
J. Differential Equations, 332, 123-201. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

D. Marín, J. Villadelprat.
On the cyclicity of Kolmogorov polycycles.
Electron. J. Qual. Theory Differ. Equ., 2022(35), 1-31. 2022. [DOI]
PreprintAbstractPreprint at DDDUAB

D. D. Novaes, G. Rondon.
On limit cycles in regularized Filippov systems bifurcating from homoclinic-like connections to regular-tangential singularities.
Phys. D, 442, Paper No. 133526, 15. 2022. [DOI]
PreprintAbstract