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Existence and symmetry of positive solutions of an integral equation system
Journal article   Open access   Peer reviewed

Existence and symmetry of positive solutions of an integral equation system

Xiaotao Huang, Dongsheng Li and Lihe Wang
Mathematical and computer modelling, Vol.52(5), pp.892-901
2010
DOI: 10.1016/j.mcm.2010.05.020
url
https://doi.org/10.1016/j.mcm.2010.05.020View
Published (Version of record) Open Access

Abstract

In this paper, we investigate positive solutions of the following integral equation system in R n : { u ( x ) = ∫ R n ∣ x − y ∣ α − n v ( y ) p d y , v ( x ) = ∫ R n ∣ x − y ∣ β − n u ( y ) q d y , where p , q > 1 , 0 < α , β < n . With the method of moving spheres, we show the existence and the exact form of its solution in the case p ≤ ( n + α ) / ( n − β ) , q ≤ ( n + β ) / ( n − α ) ; and with the method of moving planes, we prove the symmetry and monotonicity of its solution in the case 1 p + 1 + 1 q + 1 = n − α 2 n + β − α + n − β 2 n + α − β .
Symmetry and monotonicity Moving planes Moving spheres System of integral equations

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