A. Ferragut, A. Gasull, X. Zhang.
Meromorphic first integrals of analytic diffeomorphisms.
J. Math. Anal. Appl., 519, 126796. 2023. [DOI]
PreprintAbstractOA at DDDUAB

J. D. García Saldaña, J. Llibre, C. Valls.
On a class of global centers of linear systems with quintic homogeneous nonlinearities.
Dyn. Contin. Discrete Impuls. Syst. Ser A: Math Anal., 30, 135-148. 2023.
PreprintAbstract

B. García, J. Llibre, J. S. Pérez del Río, S. Pérez-González.
Limit cycles of polynomially integrable piecewise differential systems.
Axioms, 2023(12), 342. 2023. [DOI]
PreprintAbstractOA at DDDUAB

I. A. García, J. Llibre.
Polynomial Liénard systems with a nilpotent global center.
Rend. Circ. Mat. Palermo (2), 72, 3625–3636. 2023.
AbstractFull PDF

A. Garijo, X. Jarque.
Dynamics of the secand map near infinity.
J. Difference Equ. Appl., 28(10), 1334-1347. 2023. [DOI]
PreprintAbstractOA at DDDUAB

A. Gasull.
Linealización en sistemas dinámicos holomorfos.
Gac. R. Soc. Mat. Esp., 26(3), 518. 2023.
PreprintOA at DDDUAB

A. Gasull.
Proof without words: tangent of $\pi/8$.
Coll. Math. J., 54, . 2023. [DOI]
PreprintOA at DDDUAB

A. Gasull.
Mètodes de demostració.
Mat. Mat., 3, 85. 2023.
PreprintAbstractOA at DDDUAB

A. Gasull, H. Giacomini.
Number of limit cycles for planar systems with invariant algebraic curves.
Qual. Theory Dyn. Syst., 22(2), 44:1-28. 2023. [DOI]
PreprintAbstractOA at DDDUAB

A. Gasull, A. Guillamon, V. Mañosa.
Counting configurations of limit cycles and centers.
Bul. Acad. Ştiinţe Repub. Mold. Mat., 101, 78-96. 2023. [DOI]
PreprintAbstractOA at DDDUAB

A. Gasull, F. Luca, J. L. Varona.
Three essays on Machin’s type formulas.
Indag. Math. (N.S.), 34, 1373–1396. 2023.
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A. Gasull, Y. Zhao.
Existence of at most two limit cycles for some non-autonomous differential equations.
Commun. Pure Appl. Anal., 22(3), 970-982. 2023. [DOI]
PreprintAbstractOA at DDDUAB

J. Giné, J. Llibre.
Criteria for the nonexistence of periodic orbits in planar differential systems.
Bul. Acad. Ştiinţe Repub. Mold. Mat., 2023(1), 3-7. 2023. [DOI]
PostprintAbstract

J. Ginoux, J. Llibre.
A family of periodic orbits for the extended Hamiltonian system of the Van der Pol oscillator.
J. Geom. Phys., 183, 104705. 2023. [DOI]
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J. J. Jimenez Ruiz, J. Llibre.
Limit cycles of polynomial differential systems of degree 1 and 2 on the cylinder.
Sao Paulo J. Math. Sci., 17, 679–-691. 2023. [DOI]
PreprintAbstract

D. Juher, D. Rojas, J. Saldaña.
Saddle-node bifurcation of limit cycles in an epidemic model with two levels of awareness.
Phys. D, 448, 133714. 2023. [DOI]
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S. Li, C. Liu, J. Llibre.
On the Poincaré-Bendixson index formula for planar piecewise smooth vector fields.
J. Nonlinear Sci., 33(118), . 2023. [DOI]
Abstract

S. Li, J. Llibre, X. Sun.
On the indices of singular points for planar bounded piecewise smooth polynomial vector fields.
Nonlinear Anal. Hybrid Syst., 49, 101350. 2023. [DOI]
PreprintAbstractOA at DDDUAB

T. Li, J. Llibre.
On the 16-th Hilbert problem for discontinuous piecewise polynomial Hamiltonian systems.
J. Dyn. Diff. Equat., 35, 87–102. 2023. [DOI]
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J. Llibre.
On the $c^1$ non-integrability of the autonomous differential systems.
Nonlinear Anal. Real World Appl., 74, 103943 (9 pages). 2023. [DOI]
PreprintAbstractOA at DDDUAB