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  periodic solutions of radially symmetric systems with a singular      

Boundary Value Problems 2013:110

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±êÌâ: Periodic solutions of singular radially symmetric systems with superlinear growth
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×÷Õß: Fonda, Alessandro; Toader, Rodica
À´Ô´³ö°æÎï: NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS  ¾í: 74   ÆÚ: 7   Ò³: 2485-2496   DOI: 10.1016/j.na.2010.12.004   ³ö°æÄê: APR 1 2011
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×÷Õß: Fonda, Alessandro; Toader, Rodica
À´Ô´³ö°æÎï: JOURNAL OF DIFFERENTIAL EQUATIONS  ¾í: 244   ÆÚ: 12   Ò³: 3235-3264   DOI: 10.1016/j.jde.2007.11.005   ³ö°æÄê: JUN 15 2008
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Periodic solutions of radially symmetric systems with a singularity
S Li, F Liao, J Sun - Boundary Value Problems, 2013 - Springer
Abstract In this paper, we study the existence of infinitely many periodic solutions to planar radially
symmetric systems with certain strong repulsive singularities near the origin and with some semilinear
growth near infinity. The proof of the main result relies on topological degree theory. ...
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