Ll. Alsedà, D. Juher, J. Los, F. Mañosas.
Entropy stability and Milnor-Thurston invariants for Bowen-Series-like maps.
Ergodic Theory Dynam. Systems, 46, 337-372. 2026. [DOI]
PreprintAbstractFull PDFPreprint at DDDUAB

M. Álvarez-Ramírez, E. Barrabés, J. M. Cors.
On equilateral central configurations in the 1+4 body problem.
Commun. Nonlinear Sci. Numer. Simul., 152(109365), 14 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

M. Álvarez-Ramírez, J. D. García Saldaña, J. Llibre.
Integrability and periodic orbits of a 3D jerk system with two quadratic nonlinearities.
Nonlinear Anal. Real World Appl., 88, 104491 (6 pages). 2026. [DOI] (Preprint)
PreprintAbstractPreprint at DDDUAB

M. T. Anacona, G. Anacona Erazo, J. Llibre.
Limit cycles of a class of hybrid piecewise differential systems with a discontinuity line of L shape.
Nonlinear Anal. Real World Appl., 88(104492), 6 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

C. A. Buzzi, D. J. Tonon, J. Torregrosa.
Limit cycles for a piecewise polynomial potential perturbation of a symmetric 8-loop Hamiltonian.
NoDEA Nonlinear Differential Equations Appl., 33(Article 7), 29 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

N. Chachapoyas, J. Llibre, I. S. Meza Sarmiento, J. Vidarte.   NEW 2026-01-19
Limit cycles of continuous-discontinuous piecewise linear Hamiltonian systems in \(r^2\) separated by the curve \(y=\sin(x)\).
49, 2093-2097. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

A. Cima, A. Gasull, F. Mañosas.
On the critical points of planar polynomial Hamiltonian systems.
Nonlinear Anal. Real World Appl., 88(104503), 7 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

L. P. C. Cruz, J. Llibre.
Global centers in a class of quintic polynomial differential system.
Proc. Roy. Soc. Edinburgh Sect. A, 156(1), 39-54. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

L. P. C. Cruz, R. D. S. Oliveira, J. Torregrosa.
Limit cycles in piecewise quadratic Kolmogorov systems.
Commun. Nonlinear Sci. Numer. Simul., 152(109285), 16 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

M. Domingues, J. Llibre, L. F. Mello.
A new sufficient condition in order that the real Jacobian conjecture in $R^2$ holds.
J. Differential Equations, 457(114068), 8 pages. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

Á. Fernández-Mora, À. Haro, J. M. Mondelo.   NEW 2026-01-25
On the convergence of flow map parameterization methods for whiskered tori in quasi-periodic Hamiltonian systems.
Commun. Nonlinear Sci. Numer. Simul., 152, 109214. 2026. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, A. Murza.   NEW 2026-02-15
Invariant meridians and parallels on the hyperboloid of one sheet.
DIFFER GEOM, 102, 102326. 2026. [DOI]
Abstract

J. Llibre, R. D. S. Oliveira.   NEW 2026-01-30
Limit cycles of planar discontinuous piecewise linear Hamiltonian systems in three regions of Y-type.
Chaos Solitons Fractals, 207, 117997. 2026. [DOI]
AbstractPreprint at DDDUAB

J. Llibre, A. C. T. Sánchez, D. J. Tonon.   NEW 2026-01-15
Limit cycles of discontinuous piecewise hybrid rigid systems separated by a straight line.
Nonlinear Anal. Real World Appl., 91, 104607. 2026. [DOI]
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A. C. Rezende, M. A. S. Santos, J. Torregrosa.
Period function of planar reversible quadratic systems.
Research in the Mathematical Sciences, 13(25), . 2026. [DOI]
PreprintAbstract

A. C. Rezende, M. A. S. Santos, J. Torregrosa.
The period function of centers at infinity in planar piecewise linear systems.
Bull. Sci. Math., 210, . 2026. [DOI]
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M. J. Álvarez, B. Coll, A. Gasull, R. Prohens.
More limit cycles for complex differential equations with three monomials.
J. Differential Equations, 416, 1071–1098. 2025. [DOI]
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M. Álvarez-Ramírez, J. Llibre.
Global phase portrait of a rolling motion of ships equation.
Qual. Theory Dyn. Syst., 24(65), . 2025. [DOI]
PreprintAbstractPreprint at DDDUAB

G. Anacona Erazo, J. Llibre, B. R. de Freitas.
On the limit cycles bifurcating from the periodic orbits of the Hamiltonian system.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 35(4), Paper No. 2550040, 8. 2025. [DOI]
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J. C. Artés, L. Cairó, J. Llibre.
Phase portraits of the family IV of the quadratic polynomial differential systems.
Qual. Theory Dyn. Syst., 24(Article number 66), . 2025. [DOI]
PreprintAbstractPreprint at DDDUAB