A. Gasull.
Linealización en sistemas dinámicos holomorfos.
Gac. R. Soc. Mat. Esp., 26(3), 518. 2023.
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A. Gasull.
Proof without words: tangent of $\pi/8$.
Coll. Math. J., 54, . 2023. [DOI]
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A. Gasull.
Mètodes de demostració.
Mat. Mat., 3, 85. 2023.
PreprintAbstractPreprint 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]
PreprintAbstractPreprint 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]
PreprintAbstractPreprint 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]
PreprintAbstractPreprint 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]
PreprintAbstractPreprint at DDDUAB

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]
PostprintAbstract

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]
PreprintAbstractPreprint 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]
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J. Llibre.
Dynamics of the Painlevé-Ince equation.
Results Math., 78(11), 1-7. 2023. [DOI]
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J. Llibre.
Limit cycles of planar continuous piecewise differential systems separated by a parabola and formed by an arbitrary linear and quadratic centers.
Discrete Contin. Dyn. Syst. Ser. S, 16, 533-547. 2023. [DOI]
PreprintAbstract

J. Llibre.
Some families of quadratic systems with at most one limit cycle.
Bul. Acad. Ştiinţe Repub. Mold. Mat., 1, 8-15. 2023. [DOI]
Abstract

J. Llibre, D. D. Novaes, C. Valls.
Existence of a cylinder foliated by periodic orbits in the generalized Chazy differential equation.
Chaos, 33(7), 073104. 2023. [DOI]
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J. Llibre, C. Pantazi.
Global phase portraits of the quadratic systems having a singular and irreducible invariant curve of degree 3.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 33(1), 2350003. 2023. [DOI]
PreprintAbstractPreprint at DDDUAB