Abstract
Applying Krasnosel'skii fixed point theorem of cone expansion-compression type, the existence of positive radial solutions for some second-order nonlinear elliptic equations in annular domains, subject to Dirichlet boundary conditions, is investigated. By considering the properties of nonlinear term on boundary closed intervals, several existence results of positive radial solutions are established. The main results are independent of superlinear growth and sublinear growth of nonlinear term. If nonlinear term has extreme values and satisfies suitable conditions, the main results are very effective.
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Communicated by Lin Zong-chi
Biography: Yao Qing-liu (1946-)
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Qing-liu, Y., Qin-sheng, M. Existence of positive radial solutions for some semilinear elliptic equations in annulus. Appl Math Mech 23, 1452–1457 (2002). https://doi.org/10.1007/BF02438385
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DOI: https://doi.org/10.1007/BF02438385