Cláudia Valls

Publication Activity (10 Years)

Years Active: 2007-2023
Publications (10 Years): 30

Top Topics

Piecewise Linear

Principal Curves

Rendezvous Search

Top Venues

Int. J. Bifurc. Chaos

J. Nonlinear Sci.

Appl. Math. Lett.

Commun. Nonlinear Sci. Numer. Simul.

Publications

Jaume Llibre, Cláudia Valls
The Extended 16th Hilbert Problem for Discontinuous Piecewise Systems Formed by Linear Centers and Linear Hamiltonian Saddles Separated by a Nonregular Line. Int. J. Bifurc. Chaos 33 (16) (2023)
Luís Barreira, Cláudia Valls
Center manifolds for delay-differential equations with variable argument. Period. Math. Hung. 86 (1) (2023)
Johana Jimenez, Jaume Llibre, Cláudia Valls
Limit Cycles of Planar Discontinuous Piecewise Linear Hamiltonian Systems Without Equilibria Separated by Nonregular Curves. Int. J. Bifurc. Chaos 32 (12) (2022)
Jaume Llibre, Cláudia Valls
Limit Cycles of Planar Piecewise Differential Systems with Linear Hamiltonian Saddles. Symmetry 13 (7) (2021)
Érika Diz-Pita, Jaume Llibre, Victoria Otero-Espinar, Cláudia Valls
The zero-Hopf bifurcations in the Kolmogorov systems of degree 3 in R3. Commun. Nonlinear Sci. Numer. Simul. 95 (2021)
Fabio Scalco Dias, Ronisio Moises Ribeiro, Cláudia Valls
Global Phase Portraits for the Kukles Systems of Degree 3 with ℤ2-Reversible Symmetries. Int. J. Bifurc. Chaos 31 (6) (2021)
Montserrat Corbera, Cláudia Valls
On the Existence of Symmetric Bicircular Central Configurations of the 3n-Body Problem. J. Nonlinear Sci. 31 (5) (2021)
Marina Esteban, Jaume Llibre, Cláudia Valls
The Extended 16th Hilbert Problem for Discontinuous Piecewise Linear Centers Separated by a Nonregular Line. Int. J. Bifurc. Chaos 31 (15) (2021)
Jaume Llibre, Cláudia Valls
Global qualitative dynamics of the Brusselator system. Math. Comput. Simul. 170 (2020)
Maria V. Demina, Cláudia Valls
Classification of Invariant Algebraic Curves and Nonexistence of Algebraic Limit Cycles in Quadratic Systems from Family (I) of the Chinese Classification. Int. J. Bifurc. Chaos 30 (4) (2020)
Johanna Denise García-Saldaña, Jaume Llibre, Cláudia Valls
Nilpotent Global Centers of Linear Systems with Cubic Homogeneous Nonlinearities. Int. J. Bifurc. Chaos 30 (1) (2020)
Fabio Scalco Dias, Ronisio Moises Ribeiro, Cláudia Valls
Global Phase Portraits for a Planar ℤ2-Equivariant Kukles Systems of Degree 3. Int. J. Bifurc. Chaos 30 (12) (2020)
Montserrat Corbera, Cláudia Valls
Global Phase Portraits of ℤ2-Symmetric Planar Polynomial Hamiltonian Systems of Degree Three with a Nilpotent Saddle at the Origin. Int. J. Bifurc. Chaos 30 (1) (2020)
Jaume Llibre, Y. Paulina Martínez, Cláudia Valls
Limit cycles bifurcating of Kolmogorov systems in R2 and in R3. Commun. Nonlinear Sci. Numer. Simul. 91 (2020)
Jaume Llibre, Enrique Ponce, Cláudia Valls
Two Limit Cycles in Liénard Piecewise Linear Differential Systems. J. Nonlinear Sci. 29 (4) (2019)
Jaume Giné, Cláudia Valls
The Liouvillian Integrability of Several Oscillators. Int. J. Bifurc. Chaos 29 (5) (2019)
Fabio Scalco Dias, Jaume Llibre, Cláudia Valls
Polynomial Hamiltonian systems of degree 3 with symmetric nilpotent centers. Math. Comput. Simul. 144 (2018)
Murilo R. Cândido, Jaume Llibre, Cláudia Valls
Invariant Algebraic Surfaces and Hopf Bifurcation of a Finance Model. Int. J. Bifurc. Chaos 28 (12) (2018)
Jaume Giné, Cláudia Valls
Nondegenerate centers for Abel polynomial differential equations of second kind. J. Comput. Appl. Math. 321 (2017)
Jaume Llibre, Cláudia Valls
Limit cycles for a variant of a generalized Riccati equation. Appl. Math. Lett. 68 (2017)
Luís Barreira, Liviu Horia Popescu, Cláudia Valls
Robustness of exponential behavior in Banach spaces. Period. Math. Hung. 75 (1) (2017)
Adam Mahdi, Antoni Ferragut, Cláudia Valls, Carsten Wiuf
Conservation Laws in Biochemical Reaction Networks. SIAM J. Appl. Dyn. Syst. 16 (4) (2017)
Jaume Giné, Cláudia Valls
. J. Symb. Comput. 73 (2016)
Regilene D. S. Oliveira, Cláudia Valls
Chaotic Behavior of a Generalized Sprott E Differential System. Int. J. Bifurc. Chaos 26 (5) (2016)
Jaume Llibre, Cláudia Valls, Xiang Zhang
The Completely Integrable Differential Systems are Essentially Linear Differential Systems. J. Nonlinear Sci. 25 (4) (2015)
Jaume Llibre, Enrique Ponce, Cláudia Valls
Uniqueness and Non-uniqueness of Limit Cycles for Piecewise Linear Differential Systems with Three Zones and No Symmetry. J. Nonlinear Sci. 25 (4) (2015)
Cláudia Valls
. Appl. Math. Comput. 251 (2015)
Jaume Giné, Jaume Llibre, Cláudia Valls
Centers and isochronous centers for generalized quintic systems. J. Comput. Appl. Math. 279 (2015)
Jaume Llibre, Cláudia Valls
Hopf bifurcation of a generalized Moon-Rand system. Commun. Nonlinear Sci. Numer. Simul. 20 (3) (2015)
Jaume Llibre, Cláudia Valls
On the integrability of a three-dimensional cored galactic Hamiltonian. Appl. Math. Lett. 41 (2015)
Jaume Giné, Jaume Llibre, Cláudia Valls
Centers for a class of generalized quintic polynomial differential systems. Appl. Math. Comput. 242 (2014)
Jaume Llibre, Cláudia Valls
On the analytic integrability of the cored galactic Hamiltonian. Appl. Math. Lett. 33 (2014)
Luís Barreira, Liviu Horia Popescu, Cláudia Valls
Exponential behavior in Banach spaces: robustness of trichotomies in discrete time. Period. Math. Hung. 68 (2) (2014)
Jaume Llibre, Cláudia Valls
Generalized Weierstrass integrability for the complex differential equations dydx=a(x)y4+b(x)y3+c(x)y2+d(x)y+e(x). Appl. Math. Lett. 26 (8) (2013)
Jaume Llibre, Cláudia Valls
On the Number of Limit cycles for a Generalization of LiéNard Polynomial differential Systems. Int. J. Bifurc. Chaos 23 (3) (2013)
Jaume Llibre, Cláudia Valls
Polynomial First integrals for the Chen and Lü Systems. Int. J. Bifurc. Chaos 22 (11) (2012)
Luís Barreira, Cláudia Valls
Hausdorff Dimension and Nonlinear Relations Between Frequencies of Digits. Open Syst. Inf. Dyn. 19 (3) (2012)
Cláudia Valls
Darboux integrability of a nonlinear financial system. Appl. Math. Comput. 218 (7) (2011)
Jaume Llibre, Cláudia Valls
non-integrability of the Belousov-Zhabotinskii system. Comput. Math. Appl. 62 (5) (2011)
Cláudia Valls
On the Anisotropic Potentials of Manev-Schwarzschild Type. Int. J. Bifurc. Chaos 20 (4) (2010)
Diogo A. Gomes, Cláudia Valls
Wigner measures and quantum Aubry-Mather theory. Asymptot. Anal. 51 (1) (2007)
Jaume Llibre, Cláudia Valls
Formal and Analytic Integrability of the Rossler System. Int. J. Bifurc. Chaos 17 (9) (2007)