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Fields of Interest
Dynamical systems in general and ordinary differential equations in particular. Planar differential equations. Global asymptotic stability. Global injectivity. Mathematical modelling. Difference equations. Mathematical recreation.Preprints
Publications
A. Cima, A. Gasull, V. Mañosa NEW 10/01/07
On two and three periodic Lyness difference equations.
Preprint. 2010.
[Abstract] [Full PDF]
M. Caubergh, A. Gasull
Absolute Cyclicity, Lyapunov quantities and Center Conditions.
Preprint. 2009. To appear in J. Math. Anal. Appl.
[Abstract] [Full PDF]
M. Chamberland, A. Gasull
Chini Equations and Isochronous Centers in Three-Dimensional Differential Systems.
Preprint. 2009. To appear in Qual. Theory Dyn. Syst.
[Abstract] [Full PDF]
A. Cima, A. Gasull, F. Mañosas
Global linearization of periodic difference equations.
Preprint. 2009.
[Abstract] [Full PDF]
A. Gasull, H. Giacomini, J. Torregrosa NEW 09/12/16
Some results on homoclinic and heteroclinic connections in planar systems.
Preprint. 2009.
[Abstract] [Full PDF]
A. Gasull, C. Liu, J. Yang NEW 09/10/28
On the number of critical periods for planar polynomial systems of arbitrary degree.
Preprint. 2009. To appear in J. Differential Equations
[Abstract] [Full PDF]
M. J. Álvarez, A. Gasull, R. Prohens
Topological classification of polynomial complex differential equations with all the critical points of center type.
Preprint. 2008. To appear in J. Difference Equ. Appl.
[Abstract] [Full PDF]
J. Bravo, M. Fernández, A. Gasull
Limit cycles for some Abel equations having coefficients without fixed signs.
Preprint. 2008. To appear in Internat. J. Bifur. Chaos Appl. Sci. Engrg.
[Abstract] [Full PDF]
A. Cima, A. Gasull, V. Mañosa
On Poncelet's Maps.
Preprint. 2008.
[Abstract] [Full PDF]
A. Garijo, A. Gasull, X. Jarque
A note on the period function for certain planar vector fields.
Preprint. 2008. To appear in J. Difference Equ. Appl.
[Abstract] [Full PDF]
A. Gasull, J. Giné
Cyclicity versus Center problem.
Preprint. 2008. To appear in Qual. Theory Dyn. Syst.
[Abstract] [Full PDF]
A. Gasull, Y. Zhao
On a family of polynomial differential equations having at most three limit cycles.
Preprint. 2008.
[Abstract] [Full PDF]
A. Gasull, H. Giacomini
Upper bounds for the number of limit cycles of some planar polynomial differential systems.
Discrete Contin. Dynam. Systems, 27(1). 217-229, 2010.
[Abstract]
M. J. Álvarez, A. Gasull, R. Prohens
Configurations of critical points in complex polynomial differential equations.
Nonlinear Anal., Ser. A: Theory Methods, 71, 923-934, 2009.
[Abstract]
A. Cima, A. Gasull, J. Medrado
On persistent centers.
Bull. Sci. Math., 133(6). 644–657, 2009.
[Abstract]
A. Gasull, H. Giacomini, J. Llibre
New criteria for the existence and non-existence of limit cycles in Liénard differential systems.
Dynamical Systems: An International Journal, 24(2). 171-185, 2009.
[Abstract]
A. Gasull, J. Llibre, X. Zhang
One-dimensional quaternion homogeneous polynomial differential equations.
J. Math. Phys., 50, 082705, 2009.
[Abstract]
A. Gasull, J. Torregrosa
Models de població del món i prediccions.
Materials Matemàtics, 2009(4). 1-20, 2009.
[Abstract] [Full PDF]
M. J. Álvarez, A. Gasull, R. Prohens
Limit cycles for cubic systems with a symmetry of order 4 and without infinite critical points.
Proc. Amer. Math. Soc., 136, 1035-1043, 2008.
[Abstract]
M. J. Álvarez, A. Gasull, J. Yu
Lower bounds for the number of limit cycles of trigonometric Abel equations.
J. Math. Anal. Appl., 342, 682-693, 2008.
[Abstract]
A. Cima, A. Gasull, V. Mañosa
Some properties of the -dimensional Lyness' map.
J. Phys. A, 41, 1-18, 2008.
[Abstract]
A. Cima, A. Gasull, V. Mañosa
Studying discrete dynamical systems through differential equations.
J. Differential Equations, 244, 630-648, 2008.
[Abstract]
A. Cima, A. Gasull, P. Silva
On the number of critical periods for planar polynomial systems.
Nonlinear Anal., Ser. A: Theory Methods, 69, 1889-1903, 2008.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Simple non-autonomous differential equations with many limit cycles.
Comm. on Applied Nonlinear Analysis, 15(1). 29-34, 2008.
[Abstract]
A. Garijo, A. Gasull, X. Jarque
Simultaneous bifurcation of limit cycles from two nests of periodic orbits.
J. Math. Anal. Appl., 341, 813-824, 2008.
[Abstract]
A. Gasull, H. Giacomini, M. Grau
On the stability of periodic orbits for differential systems in .
Discrete Contin. Dynam. Systems, 10(02/03/09). 495-509, 2008.
[Abstract]
A. Gasull, R. Prohens, J. Torregrosa
Bifurcation of limit cycles from a polynomial non-global center.
J. Dynam. Differential Equations, 20, 945-960, 2008.
[Abstract]
A. Gasull, J. Yu
On the critical periods of perturbed isochronous centers.
J. Differential Equations, 244, 696-715, 2008.
[Abstract]
A. Gasull, Y. Zhao
Bifurcation of Critical Periods from the Rigid Quadratic Isochronous.
Bull. Sci. Math., 132, 292-312, 2008.
[Abstract] [Full PDF]
M. J. Álvarez, A. Gasull, H. Giacomini
A new uniqueness criterion for the number of periodic orbits of Abel equations.
J. Differential Equations, 234(1). 161-176, 2007.
[Abstract]
M. J. Álvarez, A. Gasull, R. Prohens
On the number of limit cycles of some systems on the cylinder.
Bull. Sci. Math., 131(7). 620-637, 2007.
[Abstract]
A. Buica, A. Gasull, J. Yang
The third order melnikov function of a quadratic center under quadratic perturbations.
J. Math. Anal. Appl., 331(1). 443-454, 2007.
[Abstract]
M. Chamberland, A. Cima, A. Gasull, F. Mañosas
Characterizing Asymptotic Stability with Dulac Functions.
Discrete Contin. Dynam. Systems, 17(1). 59-76, 2007.
[Abstract]
A. Cima, A. Gasull, V. Mañosa
Dynamics of the third order Lyness' difference equation.
J. Difference Equ. Appl., 13(10). 855-884, 2007.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Periodic orbits in complex Abel equations.
J. Differential Equations, 232, 314-328, 2007.
[Abstract]
E. Freire, A. Gasull, A. Guillamon
Limit cycles and Lie symmetries.
Bull. Sci. Math., 131, 501-517, 2007.
[Abstract]
A. Garijo, A. Gasull, X. Jarque
Local and global phase portrait of equation .
Discrete Contin. Dynam. Systems, 17(2). 309-329, 2007.
[Abstract]
A. Gasull, H. Giacomini, J. Torregrosa
Explicit non-algebraic limit cycles for polynomial systems.
J. Comput. Appl. Math., 200(1). 448-457, 2007.
[Abstract]
A. Gasull, J. Giné, M. Grau
Multiplicity of limit cycles and analytic m-solutions for planar differential systems.
J. Differential Equations, 240, 375-398, 2007.
[Abstract]
A. Gasull, M. Jolis
Citacions al voltant de les matemàtiques.
Materials matemàtics, 2007(2). 1-27, 2007.
[Abstract]
A. Gasull, C. Li, C. Liu
On the number of limit cycles bifurcating from a non-global degenerated center.
J. Math. Anal. Appl., 329(1). 268-280, 2007.
[Abstract]
M. J. Álvarez, A. Gasull
Generating limit cycles from a nilpotent critical point via normal forms.
J. Math. Anal. Appl., 318, 271-287, 2006.
[Abstract]
A. Cima, A. Gasull, V. Mañosa
Dynamics of some rational discrete dynamical systems via invariants.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 16(3). 631-645, 2006.
[Abstract]
A. Cima, A. Gasull, V. Mañosa
Global Periodicity and Complete Integrability of Discrete Dynamical Systems.
J. Difference Equ. Appl., 12, 697-716, 2006.
[Abstract]
B. Coll, A. Gasull, R. Prohens
On a criterium of global attraction for discrete dynamical systems.
Commun. Pure Appl. Anal., 5(3). 537-550, 2006.
[Abstract]
A. Garijo, A. Gasull, X. Jarque
On the period function for a family of complex differential equations.
J. Differential Equations, 224(2). 314-331, 2006.
[Abstract]
A. Gasull, H. Giacomini
Upper bounds for the number of limit cycles through linear differential equations.
Pacific J. Math., 226(2). 277-296, 2006.
[Abstract]
A. Gasull, A. Guillamon
Limit cycles for generalized Abel equations.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 16(2). 3737-3745, 2006.
[Abstract]
M. J. Álvarez, A. Gasull
Monodromy and stability for nilpotent critical points.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 15(4). 1253-1265, 2005.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Bifurcation of limit cycles from two families of centers.
Dynam. Contin. Discrete Impuls. Systems, 12(2). 275-288, 2005.
[Abstract]
B. Coll, A. Gasull, R. Prohens
On a criterium of global attraction for ordinary differential equations.
In International Conference on Differential Equations (Equadiff-2003), 328-333. World Scientific, 2005.
[Abstract]
A. Gasull, V. Mañosa, J. Villadelprat
On the period of the limit cycles appearing in one-parameter bifurcations.
J. Differential Equations, 213, 255-288, 2005.
[Abstract]
A. Gasull, R. Prohens, J. Torregrosa
Limit cycles for rigid cubic systems.
J. Math. Anal. Appl., 303(2). 391-404, 2005.
[Abstract]
A. Gasull, J. Torregrosa
Exact number of limit cycles for a family of rigid systems.
Proc. Amer. Math. Soc., 133(3). 751-758, 2005.
[Abstract]
A. Gasull, J. Torregrosa
Some results on rigid systems.
In International Conference on Differential Equations (Equadiff-2003), 340-345. World Sci. Publ., Hackensack, NJ, 2005.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
On periodic rational difference equations of order .
J. Difference Equ. Appl., 10(6). 549-559, 2004.
[Abstract]
E. Freire, A. Gasull, A. Guillamon
A characterization of isochronous centres in terms of symmetries.
Rev. Mat. Iberoamericana, 20(1). 205-222, 2004.
[Abstract]
E. Freire, A. Gasull, A. Guillamon
First derivative of the period function with applications.
J. Differential Equations, 204(1). 139-162, 2004.
[Abstract]
A. Garijo, A. Gasull, X. Jarque
Normal forms for singularities of one dimensional holomorphic vector fields.
Electron. J. Differential Equations, 2004(122). 1-7, 2004.
[Abstract]
A. Gasull, A. Guillamon, J. Villadelprat
The period function for second-order quadratic ODEs is monotone.
Qual. Theory Dyn. Syst., 4(2). 329-352, 2004.
[Abstract]
A. Gasull, J. Torregrosa
Center-focus problem for discontinuous planar differential equations.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 13(7). 1755-1766, 2003.
[Abstract]
E. Freire, A. Gasull, A. Guillamon
Period function for perturbed isochronous centres.
Qual. Theory Dyn. Syst., 3(1). 275-284, 2002.
[Abstract]
A. Gasull, H. Giacomini
A New Criterion for Controlling the Number of Limit Cycles of Some Generalized Liénard Equations.
J. Differential Equations, 185(1). 54-73, 2002.
[Abstract]
A. Gasull, W. Li, J. Llibre, Z. Zhang
Chebyshev property of complete elliptic integrals and its application to Abelian integrals.
Pacific J. Math., 202(2). 341-361, 2002.
[Abstract]
A. Gasull, V. Mañosa
A Darboux-type Theory of Integrability for Discrete Dynamical Systems.
J. Difference Equ. Appl., 8(12). 1171-1191, 2002.
[Abstract]
A. Gasull, V. Mañosa, F. Mañosas
Monodromy and stability of a class of degenerate planar critical points.
J. Differential Equations, 182(1). 169-190, 2002.
[Abstract]
A. Gasull, V. Mañosa, F. Mañosas
Stability of certain planar unbounded polycycles.
J. Math. Anal. Appl., 269(1). 332-351, 2002.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
A note on LaSalle's problems.
Ann. Polon. Math., 76(01/02/09). 33-46, 2001.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Degenerate Hopf bifurcations in discontinuous planar systems.
J. Math. Anal. Appl., 253(2). 671-690, 2001.
[Abstract]
A. Gasull, J. Torregrosa
A new algorithm for the computation of the Lyapunov constants for some degenerated critical points.
Nonlinear Anal., Ser. A: Theory Methods, 47(7). 4479-4490, 2001.
[Abstract]
A. Gasull, J. Torregrosa
A new approach to the computation of the Lyapunov constants.
Comput. Appl. Math., 20(01/02/09). 149-177, 2001.
[Abstract]
A. Gasull, J. Torregrosa
A relation between small amplitude and big limit cycles.
Rocky Mountain J. Math., 31(4). 1277-1303, 2001.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Period function for a class of Hamiltonian systems.
J. Differential Equations, 168(1). 180-199, 2000.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Center-focus and isochronous center problems for discontinuous differential equations.
Discrete Contin. Dynam. Systems, 6(3). 609-624, 2000.
[Abstract]
A. Gasull
Algunes aplicacions dels fractals a la medicina.
Fi (Electronic Journal of undergraduate students of mathematics of Univ. Autònoma de Barcelona), 2000.
[Abstract]
A. Gasull
Non elementary mathematics in the daily life.
Varia Mathematica, 1, 15-30, 2000.
[Abstract]
A. Gasull, A. Guillamon, V. Mañosa
Phase portrait of Hamiltonian systems with homogeneous nonlinearities.
Nonlinear Anal., Ser. A: Theory Methods, 42(4). 679-707, 2000.
[Abstract]
A. Gasull, J. Llibre, V. Mañosa, F. Mañosas
The focus-centre problem for a type of degenerate system.
Nonlinearity, 13(3). 699-729, 2000.
[Abstract]
A. Gasull, R. Prohens
Simple examples of one-parameter planar bifurcations.
Extracta Math., 15(1). 219-229, 2000.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
The discrete Markus-Yamabe problem.
Nonlinear Anal., Ser. A: Theory Methods, 35(3). 343-354, 1999.
[Abstract]
B. Coll, R. Prohens, A. Gasull
The center problem for discontinuous Liénard differential equation.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 9(9). 1751-1761, 1999.
[Abstract]
A. Gasull, A. Guillamon, V. Mañosa
An analytic-numerical method for computation of the Liapunov and period constants derived from their algebraic structure.
SIAM J. Numer. Anal., 36(4). 1030-1043, 1999.
[Abstract]
A. Gasull, J. Torregrosa
Euler-Jacobi formula for double points and applications to quadratic and cubic systems.
Bull. Belg. Math. Soc. Simon Stevin, 6(3). 337-346, 1999.
[Abstract]
A. Gasull, J. Torregrosa
Small-amplitude limit cycles in Liénard systems via multiplicity.
J. Differential Equations, 159(1). 186-211, 1999.
[Abstract]
A. Cima, A. Gasull, J. Torregrosa
On the relation between index and multiplicity.
J. London Math. Soc. (2), 57(3). 757-768, 1998.
[Abstract]
A. Gasull, J. Torregrosa
Center problem for several differential equations via Cherkas' method.
J. Math. Anal. Appl., 228(2). 322-343, 1998.
[Abstract]
A. Cima, A. Gasull, V. Mañosa, F. Mañosas
Algebraic properties of the Liapunov and period constants.
Rocky Mountain J. Math., 27(2). 471-501, 1997.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
A polynomial class of Markus-Yamabe counterexamples.
Publ. Mat., 41(1). 85-100, 1997.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Limit cycles for vector fields with homogeneous components.
Appl. Math., 24(3). 281-287, 1997.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Some remarks on continuous and discrete Markus-Yamabe Problems.
In A conference on Polynomial Maps and the Jacobian Conjecture, 1997.
[Abstract]
A. Cima, A. Essen, A. Gasull, E. Hubbers, F. Mañosas
A polynomial counterexample to the Markus-Yamabe conjecture.
Adv. Math., 131(2). 453-457, 1997.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Differential equations defined by the sum of two quasi-homogeneous vector fields.
Canad. J. Math., 49(2). 212-231, 1997.
[Abstract]
A. Gasull, A. Guillamon, V. Mañosa
An explicit expression of the first Liapunov and period constants with applications.
J. Math. Anal. Appl., 211(1). 190-212, 1997.
[Abstract]
A. Gasull, A. Guillamon, V. Mañosa, F. Mañosas
The period function for Hamiltonian systems with homogeneous nonlinearities.
J. Differential Equations, 139(2). 237-260, 1997.
[Abstract]
A. Gasull, R. Kooij, J. Torregrosa
Limit cycles in the Holling-Tanner model.
Publ. Mat., 41(1). 149-167, 1997.
[Abstract]
A. Gasull, R. Prohens
Effective computation of the first Lyapunov quantities for a planar differential equation.
Appl. Math., 24(3). 243-250, 1997.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Injectivity of polynomial local homeomorphisms of .
Nonlinear Anal., Ser. A: Theory Methods, 26(4). 877-885, 1996.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
The genesis of Markus-Yamabe counterexamples.
In 3rd Catalan Days on Applied Mathematics (Lleida, 1996), 49-55. Univ. Lleida, Lleida, 1996.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Limit cycles for nonsmooth differential equations via Schwarzian derivative.
J. Differential Equations, 132(2). 203-221, 1996.
[Abstract]
R. Garcia, A. Gasull, A. Guillamon
Geometrical conditions for the stability of orbits in planar systems.
Math. Proc. Cambridge Philos. Soc., 120(3). 499-519, 1996.
[Abstract]
A. Gasull, A. Guillamon, C. Li, Z. Zhang
Study of perturbed Lotka-Volterra systems via Abelian integrals.
J. Math. Anal. Appl., 198(3). 703-728, 1996.
[Abstract]
A. Gasull, R. Prohens
On quadratic systems with a degenerate critical point.
Rocky Mountain J. Math., 26(1). 135-164, 1996.
[Abstract]
A. Gasull, R. Prohens
Quadratic and cubic systems with degenerate infinity.
J. Math. Anal. Appl., 198(1). 25-34, 1996.
[Abstract]
A. Cima, A. Gasull, J. Llibre, F. Mañosas
Global injectivity of polynomial maps via vector fields.
In Automorphisms of affine spaces (Curaçao, 1994), 105-123. Kluwer Acad. Publ., Dordrecht, 1995.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Cyclicity of a family of vector fields.
J. Math. Anal. Appl., 196(3). 921-937, 1995.
[Abstract]
A. Cima, A. Gasull, J. Torregrosa
Index and multiplicity.
In XIV CEDYA/IV Congress of Applied Mathematics (Vic, 1995), 15 pp. Univ. Barcelona, Barcelona, 1995.
[Abstract]
B. Coll, A. Gasull, R. Prohens
First Lyapunov constants for non-smooth Liénard differential equations.
In 2nd Catalan Days on Applied Mathematics (Odeillo, 1995), 77-83. Presses Univ. Perpignan, Perpignan, 1995.
[Abstract]
A. Gasull, A. Guillamon
A theorem of global asymptotical stability.
In XIV CEDYA/IV Congress of Applied Mathematics (Vic,1995), 4 pp. Univ. Barcelona, Barcelona, 1995.
[Abstract]
A. Gasull, A. Guillamon
Non-existence, uniqueness of limit cycles and center problem in a system that includes predator-prey systems and generalized Liénard equations.
Differ. Equ. Dyn. Syst., 3(4). 345-366, 1995.
[Abstract]
A. Gasull, A. Guillamon, V. Mañosa
Centre and isochronicity conditions for systems with homogeneous nonlinearities.
In 2nd Catalan Days on Applied Mathematics (Odeillo, 1995), 105-116. Presses Univ. Perpignan, Perpignan, 1995.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
On polynomial Hamiltonian planar vector fields.
J. Differential Equations, 106(2). 367-383, 1993.
[Abstract]
A. Cima, A. Gasull, F. Mañosas
Some applications of the Euler-Jacobi formula to differential equations.
Proc. Amer. Math. Soc., 118(1). 151-163, 1993.
[Abstract]
B. Coll, A. Gasull, R. Prohens
Singular limit cycles for a class of differential equations.
In International Conference on Differential Equations (Barcelona, 1991), 404-409. World Sci. Publishing, River Edge NJ, 1993.
[Abstract]
A. Gasull
On polynomial systems with invariant algebraic curves.
In International Conference on Differential Equations (Barcelona, 1991), 531-537. World Sci. Publishing, River Edge NJ, 1993.
[Abstract]
A. Gasull
Polynomial systems with enough invariant algebraic curves.
In Dynamical systems (Tianjin, 1990/1991), 73-78. World Sci. Publishing, River Edge NJ, 1993.
[Abstract]
A. Gasull, A. Guillamon
Nonexistence of limit cycles for some predator-prey systems.
In International Conference on Differential Equations (Barcelona, 1991), 538-543. World Sci. Publishing, River Edge NJ, 1993.
[Abstract]
A. Gasull, G. Guasp, A. Guillamon
Applications of Riemannian metrics to systems of planar differential equations.
In XII CEDYA/II Congress on Applied Mathematics (Oviedo, 1991), 129-134. Univ. Oviedo, Oviedo, 1991.
[Abstract]
A. Gasull, J. Llibre, J. Sotomayor
Global asymptotic stability of differential equations in the plane.
J. Differential Equations, 91(2). 327-335, 1991.
[Abstract]
A. Gasull, J. Llibre
Limit cycles for a class of Abel equations.
SIAM J. Math. Anal., 21(5). 1235-1244, 1990.
[Abstract]
A. Gasull, J. Sotomayor
On the basin of attraction of dissipative planar vector fields.
In Bifurcations of planar vector fields (Luminy, 1989), 187-195. Springer, Berlin, 1990.
[Abstract]
A. Gasull, E. Ventura
Secció Problemes i Jocs.
Butl. Soc. Catalana Mat., 5, 74-77, 1990.
[Abstract]
B. Coll, A. Gasull, J. Llibre
Uniqueness of limit cycles for a class of Liénard systems with applications.
J. Math. Anal. Appl., 141(2). 442-450, 1989.
[Abstract]
A. Gasull
Differential equations that can be transformed into equations of Liénard type.
Actas del XVLL Colloquio Brasileiro de Matematica, 1989.
[Abstract]
A. Gasull
Disappearance of limit cycles for some families of planar vector fields.
In European Conference on Iteration Theory (Caldes de Malavella, 1987), 225-230. World Sci. Publishing, Teaneck NJ, 1989.
[Abstract]
B. Coll, A. Gasull, J. Llibre
Quadratic systems with a unique finite rest point.
Publ. Mat., 32(2). 199-259, 1988.
[Abstract]
A. Gasull, J. Llibre
On the nonsingular quadratic differential equations in the plane.
Proc. Amer. Math. Soc., 104(3). 793-794, 1988.
[Abstract]
A. Chenciner, A. Gasull, J. Llibre
Une description complète du portrait de phase d'un modèle d'élimination résonante.
C. R. Acad. Sci. Paris Sér. I Math., 305(13). 623-626, 1987.
[Abstract]
B. Coll, A. Gasull, J. Llibre
Some theorems on the existence, uniqueness, and nonexistence of limit cycles for quadratic systems.
J. Differential Equations, 67(3). 372-399, 1987.
[Abstract]
A. Gasull, J. Llibre, J. Sotomayor
Further considerations on the number of limit cycles of vector fields of the form .
J. Differential Equations, 68(1). 36-40, 1987.
[Abstract]
A. Gasull, J. Llibre, J. Sotomayor
Limit cycles of vector fields of the form .
J. Differential Equations, 67(1). 90-110, 1987.
[Abstract]
A. Gasull
Qualitative study of some classes of differential equations on the plane.
PhD thesis, Universitat Autònoma de Barcelona, 1986.
[Abstract]
A. Gasull, L. Sheng, J. Llibre
Chordal quadratic systems.
Rocky Mountain J. Math., 16(4). 751-782, 1986.
[Abstract]
B. Coll, A. Gasull, J. Llibre
On quadratic systems with a unique finite singularity.
In VII CEDYA (Granada, 1984), 111-117. Univ. Granada, Granada, 1985.
[Abstract]
A. Gasull
On a family of area-preserving mappings.
Butl. Soc. Catalana Ciènc. Fís. Quím. Mat. (2), 5, 145-176, 1985.
[Abstract]
A. Gasull, L. Sheng, J. Llibre
Chordal quadratic systems.
In VII CEDYA (Granada, 1984), 169-174. Univ. Granada, Granada, 1985.
[Abstract]
P. Ara, F. Cedó, A. Gasull
El problema dels tres recipients (Secció Problemes i jocs).
Butl. Sec. Mat. Soc. Cat. Ciènc. Fís. Quím. Mat. (2), 14(1). 57-62, 1983.
[Abstract]
A. Gasull
About the number of limit cycles of a generalized Liénard equation.
In VI CEDYA (Jaca, 1983), 373-377. 1983.
[Abstract]
A. Gasull
About a family of area preserving aplications. (In Catalan)
Masters thesis, Universitat Autònoma de Barcelona, 1982.
[Abstract]
A. Gasull
A generalization of the Newton-Raphson method.
Publ. Sec. Mat. Univ. Autònoma Barcelona, 23, 133-138, 1981.
[Abstract]
