J. Torregrosa

发表

Center Problem for Several Differential Equations via Cherkas' Method☆

A. Gasull, J. Torregrosa, Joan Torregrosa, 1998 .

A new algorithm for the computation of the Lyapunov constants for some degenerated critical points

Joan Torregrosa, Armengol Gasull, A. Gasull, 2001 .

The local cyclicity problem: Melnikov method using Lyapunov constants

J. Torregrosa, L. F. Gouveia, 2022, Proceedings of the Edinburgh Mathematical Society.

Limit cycles via higher order perturbations for some piecewise differential systems

J. Torregrosa, C. Buzzi, M. F. S. Lima, 2018 .

Center problem for systems with two monomial nonlinearities

J. Giné, A. Gasull, J. Torregrosa, 2016 .

Rational Parameterizations Approach for Solving Equations in Some Dynamical Systems Problems

A. Gasull, J. Torregrosa, J. T. Lázaro, 2018, Qualitative Theory of Dynamical Systems.

Piecewise linear differential systems with an algebraic line of separation

X. Zhang, A. Gasull, J. Torregrosa, 2020, Electronic Journal of Differential Equations.

Simultaneous bifurcation of limit cycles from a cubic piecewise center with two period annuli

J. Torregrosa, L. D. Cruz, 2018 .

A Bendixon–Dulac theorem for some piecewise systems

J. Torregrosa, L. C. Da Cruz, 2020 .

ON THE MAXIMUM NUMBER OF LIMIT CYCLES OF DISCONTINUOUS PIECEWISE LINEAR DIFFERENTIAL SYSTEMS WITH A STRAIGHT LINE OF SEPARATION

J. Llibre, J. Torregrosa, M. Teixeira, 2015 .

Limit cycles for 3-monomial differential equations

Chengzhi Li, A. Gasull, J. Torregrosa, 2015 .

A proof of Perkoʼs conjectures for the Bogdanov-Takens system

A. Gasull, J. Torregrosa, H. Giacomini, 2013, 1303.2065.

SOME RESULTS ON RIGID SYSTEMS

A. Gasull, J. Torregrosa, 2005 .

Simultaneous Bifurcation of Limit Cycles and Critical Periods

J. Torregrosa, Regilene D. S. Oliveira, I. Sánchez-Sánchez, 2021, Qualitative Theory of Dynamical Systems.

On the Chebyshev property for a new family of functions

Joan Torregrosa, Armengol Gasull, J. Tomás Lázaro, 2012 .

On extended Chebyshev systems with positive accuracy

D. Novaes, J. Torregrosa, Joan Torregrosa, 2017 .

Shape and period of limit cycles bifurcating from a class of Hamiltonian period annulus

R. Prohens, J. Torregrosa, Joan Torregrosa, 2013 .

Explicit upper and lower bounds for the traveling wave solutions of Fisher-Kolmogorov type equations

A. Gasull, J. Torregrosa, H. Giacomini, 2011, 1112.0269.

Limit cycles in 4-star-symmetric planar piecewise linear systems

J. Torregrosa, C. Buzzi, J. Medrado, 2020 .

Limit cycles bifurcating from isochronous surfaces of revolution in R3

J. Llibre, J. Torregrosa, Salomón Rebollo-Perdomo, 2011 .

Simultaneous bifurcation of limit cycles from a linear center with extra singular points

J. Torregrosa, Set Pérez-González, 2014 .

Explicit upper and lower bounds for the traveling wave solutions of Fisher-Kolmogorov type equations

A. Gasull, J. Torregrosa, H. Giacomini, 2011, 1112.0269.

Time-reversibility and integrability of p:-q resonant vector fields

V. Romanovski, J. Giné, J. Torregrosa, 2022, 2211.12411.

Centers and Limit Cycles of Vector Fields Defined on Invariant Spheres

Joan Torregrosa, Claudio A. Buzzi, Ana Livia Rodero, 2021, Journal of Nonlinear Science.

Cyclicity of a fake saddle inside the quadratic vector fields

P. Maesschalck, J. Torregrosa, Salomón Rebollo-Perdomo, 2015 .

Lower Bounds for the Maximum Number of Limit cycles of Discontinuous piecewise Linear differential Systems with a Straight Line of Separation

Jaume Llibre, Marco Antonio Teixeira, Joan Torregrosa, 2013, Int. J. Bifurc. Chaos.

Limit cycles for rigid cubic systems

R. Prohens, A. Gasull, J. Torregrosa, 2005 .

Uniqueness of limit cycles for sewing planar piecewise linear systems

Joan Torregrosa, Joao C. Medrado, J. Torregrosa, 2015 .

Piecewise linear perturbations of a linear center

Joan Torregrosa, Claudio Pessoa, Claudio A. Buzzi, 2013 .

Small-Amplitude Limit Cycles in Liénard Systems via Multiplicity

Joan Torregrosa, Armengol Gasull, A. Gasull, 1999 .

Some results on homoclinic and heteroclinic connections in planar systems

A. Gasull, J. Torregrosa, H. Giacomini, 2009, 0912.3490.

Exact number of limit cycles for a family of rigid systems

A. Gasull, J. Torregrosa, 2004 .

Euler-Jacobi formula for double points and applications to quadratic and cubic systems

A. Gasull, J. Torregrosa, 1999 .

Limit cycles in planar piecewise linear differential systems with nonregular separation line

Joan Torregrosa, Pedro Toniol Cardin, J. Torregrosa, 2016 .

Existence and uniqueness of limit cycles for generalized φ-Laplacian Liénard equations

J. Torregrosa, Set Pérez-González, P. Torres, 2016 .

Weak-Foci of High Order and Cyclicity

Joan Torregrosa, Haihua Liang, Haihua Liang, 2017 .

The number of polynomial solutions of polynomial Riccati equations

A. Gasull, J. Torregrosa, Xiang Zhang, 2016, 1602.03503.

Periods for transversal maps via Lefschetz numbers for periodic points

J. Llibre, A. Guillamón, J. Torregrosa, 1995 .