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In this paper, we study the existence of positive solutions for the semilinear elliptic problem
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In this work, we study the existence of eigenvalues for a type of non-linear equations and we give some conditions to get positive eigenfunctions. Particularly, we show that under some appropriate conditions, the set of eigenvalues is an interval. 相似文献
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Samy Skander Bahoura 《数学物理学报(B辑英文版)》2008,28(4):749-758
We give two results about Harnack type inequalities. First, on Riemannian surfaces, we have an estimate of type sup + inf. The second result concern the solutions of prescribed scalar curvature equation on the unit ball of Rn with Dirichlet condition. Next, we give an inequality of type (supK ^u)^2s-1 × infπu ≤ c for positive solutions of △u = V u^5 on Ω belong toR^3, where K is a compact set of Ω and V is s-Holderian, s ∈] - 1/2, 1]. For the case s = 1/2 and Ω = S3, we prove that, if minΩ u 〉 m 〉 0 (for some particular constant m 〉 0), and the H¨olderian constant A of V tends to 0 (in certain meaning), we have the uniform boundedness of the supremum of the solutions of the previous equation on any compact set of Ω. 相似文献
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Samy Skander Bahoura 《Journal of Mathematical Analysis and Applications》2012,388(1):386-392
We consider the solutions to the prescribed scalar curvature equation on a four-dimensional Riemannian manifold M. We prove an upper bound for the supremum of all the solutions on every compact subset K of M, provided that all the solutions on M are bounded from below by a positive number. 相似文献
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Treatment of the unsymmetrical β-iminoamine ligands [PhCN(Ar)CHCNH(Ar)Me] with the zerovalent complex Pd(dba)2 in the presence of the methallyloxyphosphonium salt, gives high yields of the cationic β-diimine complexes [PhCN(Ar)CH2CN(Ar)(Me)Pd(η3-C4H7)]+[PF6]− (Ar = 2-Me-C6H4 (7); 2-MeO-C6H4 (8); 2,6-Me2-C6H3 (9); 2,6-iPr2-C6H3 (10)). All the new complexes have been characterised by NMR and IR spectroscopy. The structure of the cationic methallyl palladium complex (10) has been solved by X-ray crystallography. 相似文献