Abstract
In this work we classify the phase portraits of all quadratic polynomial differential systems having a polynomial first integral.
IfH(x, y) is a polynomial of degreen+1 then the differential systemx′=−∂H/∂y,y′=∂H/∂x is called a Hamiltonian system of degreen. We also prove that all the phase portraits that we obtain in this paper are realizable by Hamiltonian systems of degree 2.
Since we observe that all the phase portraits of the linear polynomial differential systems having a polynomial first integral are also realizable by Hamiltonian systems of degree 1, an open question appears: Are all the phase portraits of polynomial differential systems of degreen having a polynomial first integral realizable by Hamiltonian systems of degreen?
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References
A. F. Andreev,Investigation of the behaviour of the integral curves of a system of two differential equations in the neighborhood of a singular point, Translation of Amer. Math. Soc.,8 (1958), 183–207.
A. Andronov, E. A. Leontovich, I. I. Gordon and A. L. Maier,Qualitative Theory of Second-Order Dynamic Systems, Wiley, New York, 1973.
J. C. Artés, J. Llibre,Quadratic hamiltonian vector field, Journal of Differential Equations,107 (1994), 80–95.
J. C. Artés, J. Llibre,A Correction to the paper “Quadratic hamiltonian vector field”, Journal of Differential Equations,129 (1996), 559–560.
L. Cairó, H. Giacomini, J. Llibre,Liouvillian first integrals for the planar Lotka-Volterra systems, Ren. Circ. Mat. Palermo,52 (2003), 389–418.
L. Cairó, J. Llibre,Integrability of the 2-dimentional Lotka-Volterra system via polynomial (invers) integrating factors, J. Phys. A,33 (2000), 2407–2417.
J. Chavarriga, B. García, J. Llibre, J. S. Pérez del Río, J. A. Rodríguez,Polynomial first integrals of quadratic vector fields, J. Differential Equations,230 (2006), 393–421.
C. Christopher,Invariant algebraic curves and conditions for a center, Proc. Roy. Soc. Edinburgh,124 A (1994), 1209–1229.
C. Christopher, J. Llibre,Algebraic aspects of integrability for polynomial systems, Qualitative Theory of Dynamical Systems,1 (1999), 71–95.
C. Christopher, J. Llibre,Integrability via invariant algebraic curves for planar polynomial differential systems, Annals of Differential Equations,16 (2000), 5–19.
A. Cima, J. Llibre,Algebraic and topological classification of the homogeneous cubic vector fields in the plane, J. of Math. Anal. and Appl.,147 (1990), 420–448.
G. Darboux,Mémoire sur les équations différentielles algébriques du premier ordre et du premier degré (Mélanges), Bull. Sci. Math. 2ème série,2 (1878), 60–96; 123–144; 151–200.
E. A. González,Generic properties of polynomial vector fields at infinity, Trans. Amer. Math. Soc.,143 (1969), 201–222.
J. P. Jouanolou,Equations de Pfaff algébriques, in “Lectures Notes in Mathematics”,708, Springer-Verlag, New York/Berlin, 1979.
S. Labrunie,On the polynomial first integrals of the (abc) Lotka-Volterra system, J. Math. Phys.,37 (1996), 5539–5550.
J. Llibre,Integrability of polynomial differential systems, Handbook of differential equations, Ordinary Differential Equations, volume 1, Elsevier(2004).
J. Moulin-Ollagnier,Polynomial first integrals of the Lotka-Volterra system, Bull. Sci. Math.,121 (1997), 463–476.
H. Poincaré,Sur l’intégration des équations différentielles du premier ordre et du premier degré I and II, Rend. Circ. Mat. Palermo,5 (1891), 161–191;11 (1897), 193–239.
M. J. Prelle, M. F. Singer,Elementary first integrals of differential equations, Trans. Amer. Math. Soc.,279 (1983), 613–636.
J. W. Reyn,A bibliography of the qualitative theory of quadratic systems of differential equations in the plane, Delf University of Technology, 1997.
M.F. Singer,Liouvillian first integrals of differential equations, Trans. Amer. Math. Soc.,333 (1992), 673–688.
Ye Yanqian, Others,Theory of Limit Cycles, Transl. Math. Monographs,66, Amer. Math. Soc., Providence, R. P., 198
Ye Yanqian, Others,Qualitative Theory of Polynomial Differential Systems, Shangai Scientific Technical Publishers, Shangai 1995, (in Chinese).
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The first and third authors are supported by a MEC grant number MTM 2005-02094. The second author is partially supported by a DGICYT grant number MTM2005-06098-C02-01 and by a CICYT grant number 2005SGR 00550.
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García, B., Pérez Del Río, J.S. & Llibre, J. Phase portraits of the quadratic vector fields with a polynomial first integral. Rend. Circ. Mat. Palermo 55, 420–440 (2006). https://doi.org/10.1007/BF02874780
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DOI: https://doi.org/10.1007/BF02874780