# American Institute of Mathematical Sciences

August  2014, 7(4): 653-671. doi: 10.3934/dcdss.2014.7.653

## Hardy-Littlewood-Sobolev systems and related Liouville theorems

 1 Dipartimento di Matematica, Università degli Studi di Bari, via E.Orabona 4, I-70125 Bari, Italy 2 Dipartimento di Matematica e Geoscienze, Università di Trieste, via Alfonso Valerio 12/1, I-34100 Trieste, Italy

Received  November 2013 Published  February 2014

We prove some Liouville theorems for systems of integral equations and inequalities related to weighted Hardy-Littlewood-Sobolev inequality type on $R^N$ . Some semilinear singular or degenerate higher order elliptic inequalities associated to polyharmonic operators are considered. Special cases include the Hénon-Lane-Emden system.
Citation: Lorenzo D'Ambrosio, Enzo Mitidieri. Hardy-Littlewood-Sobolev systems and related Liouville theorems. Discrete & Continuous Dynamical Systems - S, 2014, 7 (4) : 653-671. doi: 10.3934/dcdss.2014.7.653
##### References:
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##### References:
 [1] H. Brezis and and S. Kamin, Sublinear elliptic equations in $R^N$, Manuscripta Math., 74 (1992), 87-106. doi: 10.1007/BF02567660.  Google Scholar [2] A. Björn and J. Biörn, Nonlinear Potential Theory on Metric Spaces, EMS Tracts in Mathematics, 17, European Mathematical Society (EMS), Zürich, 2011. doi: 10.4171/099.  Google Scholar [3] G. Caristi, L. D'Ambrosio and E. Mitidieri, Liouville Theorems for some nonlinear inequalities, Proc. Steklov Inst. Math., 260 (2008), 90-111. doi: 10.1134/S0081543808010070.  Google Scholar [4] G. Caristi, L. D'Ambrosio and E. Mitidieri, Representation formulae for solutions to some classes of higher order systems and related liouville theorems, Milan J. Math., 76 (2008), 27-67. doi: 10.1007/s00032-008-0090-3.  Google Scholar [5] W. Chen, C. Jin, C. Li and Jisun Lim, Weighted Hardy-Littlewood-Sobolev inequalities and Systems of integral equations, Disc. and Cont. Dynamics Sys. Supplement, (2005), 164-173.  Google Scholar [6] W. Chen, C. Li and B. Ou, Classification of solutions for a system of integral equations, Comm. in Partial Differential Equations, 30 (2005), 59-65. doi: 10.1081/PDE-200044445.  Google Scholar [7] W. Chen and C. Li, Regularity of solutions for a system of integral equations, Comm. Pure and Appl. Anal., 4 (2005), 1-8.  Google Scholar [8] W. Chen, C. Li and B. Ou, Classification of solutions for an integral equation, Comm. Pure Appl. Math., 59 (2006), 330-343. doi: 10.1002/cpa.20116.  Google Scholar [9] C. Cowan, A Liouville theorem for a fourth order Hénon equation,, , ().   Google Scholar [10] L. D'Ambrosio, E. Mitidieri and S. I. Pohozaev, Representation formulae and inequalities for solutions of a class of second order partial differential equations, Trans. Amer. Math. Soc., 358 (2005), 893-910. doi: 10.1090/S0002-9947-05-03717-7.  Google Scholar [11] L. Euler, Specimen transformationis singularis serierum, Nova Acta Acad. Petropol., 7 (1778), 58-70. Google Scholar [12] M. Fazly and N. Ghoussoub, On the Hénon-Lane-Emden conjecture,, , ().   Google Scholar [13] J. Heinonen, T. Kilpeläinen and O. Martio, Nonlinear Potential Theory of Degenerate Elliptic Equations, Oxford University Press, Oxford, 1993.  Google Scholar [14] W. K. Hayman and P. B. Kennedy, Subharmonic functions, I, Academic Press, London, New York, San Francisco, 1976.  Google Scholar [15] C. Jin and C. Li, Qualitative Analysis of Some Systems of Integral Equations, Cal. Var. PDEs, 26 (2006), 447-457. doi: 10.1007/s00526-006-0013-5.  Google Scholar [16] C. Jin and C. Li, Symmetry of solutions to some systems of integral equations, Proc. Amer. Math. Soc., 134 (2006), 1661-1670. doi: 10.1090/S0002-9939-05-08411-X.  Google Scholar [17] Y. Y. Li, Remark on some conformally invariant integral equations: the method of moving spheres, Journal of the European Mathematical Society, 6 (2004), 153-180.  Google Scholar [18] J. Liu, Y. Guo and Y. Zhang, Liouville-type theorem for polyharmonic systems in $R^N$, J. Differential Eq., 225 (2006), 685-709. doi: 10.1016/j.jde.2005.10.016.  Google Scholar [19] E. Mitidieri, Non existence of positive solutions of semilinear elliptic systems in $R^N$, Differential & Integral Eq., 9 (1996), 465-479. Google Scholar [20] E. Mitidieri and S. I. Pohozaev, A priori estimates and nonexistence of solutions to nonlinear partial differential equations and inequalities, Proc. Steklov Inst. Math., 234 (2001), 1-375.  Google Scholar [21] E. M. Stein and G. Weiss, Fractional Integrals in n-dimensional Euclidean space, J. Math. Mech., 7 (1958).  Google Scholar [22] X. Wei and X. Xu, Classification of solutions of higher order conformally invariant equations, Math. Ann., 313 (1999), 207-228. doi: 10.1007/s002080050258.  Google Scholar
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