New Publications:

V. Ramírez.   NEW 2019-12-10
Qualitative theory of differential equations in the plane and in the space, with emphasis on the center-focus problem and on the lotka-Volterra systems.
PhD thesis, Universitat Autònoma de Barcelona, Bellaterra, November, 2019.

J. Llibre, A. Sá.   NEW 2019-12-05
Minimal set of periods for continuous self-maps of a bouquet of circles.
Preprint. December, 2019.
 [Abstract]

J. Llibre, D. J. Tonon, M. Q. Velter.   NEW 2019-12-05
Crossing periodic orbits via first integrals.
Preprint. December, 2019.
 [Abstract]

R. Benterki, J. Llibre.   NEW 2019-12-05
Crossing limit cycles of planar piecewise linear Hamiltonian systems without equilibrium points.
Preprint. December, 2019.
 [Abstract]

A. Cima, A. Gasull, V. Mañosa.   NEW 2019-12-05
Phase portraits of random planar homogeneous vector fields.
Preprint. December, 2019.
 [Preprint] [Abstract]

M. R. A. Gouveia, J. Llibre.   NEW 2019-12-05
Periods of periodic homeomorphisms of pinched surfaces with one or two branching points.
Houston J. Math., 45(4), 1227-1243, 2019.
 [Abstract]

J. Llibre, C. Valls.   NEW 2019-11-15
On the singularities of the planar cubic polynomial differential systems and the Euler Jacobi formula.
Preprint. November, 2019.
 [Abstract]

J. Llibre, R. O. Ramírez, V. Ramírez.   NEW 2019-11-15
Integrability of a class of N-dimensional Lotka-Volterra and Kolmogorov systems.
Preprint. November, 2019.
 [Abstract]

B. Coll, A. Gasull, R. Prohens.   NEW 2019-11-15
Asymptotic dynamics of a difference equation with a parabolic equilibrium.
Preprint. November, 2019.
 [Preprint] [Abstract]

A. Feddaoui, J. Llibre, A. Makhlouf.   NEW 2019-11-15
Periodic solutions for a class of Duffing differential equations.
Moroccan J. of Pure and Appl. Anal., 5(1), 86-103, 2019. [DOI]
 [Preprint] [Abstract]

M. Corbera, C. Valls.   NEW 2019-11-11
On centered co-circular central configurations of the n-body problem.
J. Dyn. Diff. Equat., 31, 2053-2060, 2019.
 [Preprint] [Abstract]

A. Garijo, X. Jarque.   NEW 2019-11-11
The secant map applied to a real polynomial with multiple roots.
To appear in Discrete Contin. Dyn. Syst.
 [Preprint] [Abstract]

F. Ikhouane, V. Mañosa, G. Pujol.   NEW 2019-11-11
Minor loops of the Dahl and LuGre models.
Appl. Math. Model., 77, 1679-1690, 2020. [DOI]
 [Preprint] [Abstract]

L. F. d. S. Gouveia, J. Torregrosa.   NEW 2019-11-11
A piecewise cubic system with 24 crossing limit cycles in only one nest.
Preprint. November, 2019.
 [Abstract]

M. Corbera, J. Llibre, P. Yuan.   NEW 2019-11-11
On the convex central configurations of the symmetric (l+2)-body problem.
Preprint. November, 2019.
 [Abstract]

F. Gao, J. Llibre.   NEW 2019-11-11
Global dynamics of the Horava-Lifshitz cosmology with non-zero curvature.
Preprint. November, 2019.
 [Abstract]

J. Llibre, X. Zhang.   NEW 2019-11-05
A survey on algebraic and explicit non-algebraic limit cycles in planar differential systems.
Preprint. November, 2019.
 [Abstract]

J. D. García Saldaña, A. Gasull, H. Giacomini.   NEW 2019-11-05
A new approach for the study of limit cycles.
Preprint. November, 2019.
 [Preprint] [Abstract]

A. Gasull, A. Geyer, F. Mañosas.   NEW 2019-10-07
A Chebyshev criterion with applications.
Preprint. October, 2019.
 [Preprint] [Abstract]

R. Benterki, L. Damene, J. Llibre.   NEW 2019-10-07
The limit cycles of discontinuous piecewise linear differential systems formed by centers and separated by irreducible cubic curves II.
Preprint. October, 2019.
 [Abstract]

A. Bakhshalizadeh, J. Llibre.   NEW 2019-10-07
Limit cycles of piecewise differential equations on the cylinder.
Preprint. October, 2019.
 [Abstract]

A. Gasull.   NEW 2019-10-07
AB y BA.
To appear in Gac. R. Soc. Mat. Esp.
 [Full PDF]

A. Gasull.   NEW 2019-10-07
El teorema de Gauss-Lucas.
Gac. R. Soc. Mat. Esp., 22(3), 550, 2019.
 [Full PDF]

J. Llibre, R. O. Ramírez, N. Sadovskaia.   NEW 2019-09-26
Differential equations with a given set of solutions.
To appear in Appl. Math. Comput.
 [Abstract]

L. Almeida Silva.   NEW 2019-09-25
On classical results for discontinuous and constrained differential systems.
PhD thesis, Universidade Federal de Goias, Goiania, Go-Brazil, August, 2019.

S. Li, J. Llibre.   NEW 2019-09-23
Phase portraits of planar piecewise linear refracting systems: focus-Saddle case.
Preprint. September, 2019.
 [Abstract]

A. Bakhshalizadeh, J. Llibre.   NEW 2019-09-23
The Hilbert number of some classes of differential equations on the torus.
Preprint. September, 2019.
 [Abstract]

J. Llibre, V. F. Sirvent.   NEW 2019-09-06
Periods of holomorphic maps on compact riemann surfaces and product of spheres.
Preprint. September, 2019.
 [Abstract]

J. J. Jimenez Ruiz, J. Llibre, J. C. Medrado.   NEW 2019-09-04
Crossing limit cycles for piecewise linear differential centers separated by a reducible cubic curve.
Preprint. September, 2019.
 [Abstract]

S. Li, C. Liu, J. Llibre.   NEW 2019-09-04
The planar discontinuous piecewise linear refracting systems have at most one limit cycle.
Preprint. September, 2019.
 [Abstract]

A. Bakhshalizadeh, J. Llibre.   NEW 2019-09-04
Phase portraits of a class of cubic systems with an ellipse and a straight line as invariant algebraic curves.
Preprint. September, 2019.
 [Abstract]

M. Alberich-Carramiñana, A. Ferragut, J. Llibre.   NEW 2019-09-04
Quadratic planar differential systems with algebraic limit cycles via quadratic plane Cremona maps.
Preprint. September, 2019.
 [Abstract]

J. Llibre, C. Valls.   NEW 2019-09-04
Configurations of the topological indices of the planar polynomial differential systems of degree $(1,m)$.
Preprint. September, 2019.
 [Abstract]

T. Chen, L. Huang, J. Llibre.   NEW 2019-09-04
Non-existence and uniqueness of limit cycles for a class of $3$-dimensional piecewise linear differential systems.
Preprint. September, 2019.
 [Abstract]

F. Gao, J. Llibre.   NEW 2019-09-04
Global dynamics of the Horava-Lifshitz cosmological system.
GEN RELAT GRAVIT, 51, 152:1-15, 2019. [DOI]
 [Preprint] [Abstract]

N. Kruff, J. Llibre, C. Pantazi, S. Walcher.   NEW 2019-09-04
Invariant algebraic surfaces of polynomial vector fields in dimension three.
Preprint. September, 2019.
 [Abstract]