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Fite and Kamenev type oscillation criteria for second order elliptic equations

Tom 92 / 2007

Zhiting Xu Annales Polonici Mathematici 92 (2007), 199-214 MSC: 35B05, 35J60, 34C10. DOI: 10.4064/ap92-3-1

Streszczenie

Fite and Kamenev type oscillation criteria for the second order nonlinear damped elliptic differential equation $$ \sum_{i,j=1}^N D_i[a_{ij}(x)D_j y] + \sum_{i=1}^Nb_i(x)D_iy+p(x)f(y)=0 $$ are obtained. Our results are extensions of those for ordinary differential equations and improve some known oscillation criteria in the literature. Several examples are given to show the significance of the results.

Autorzy

  • Zhiting XuSchool of Mathematical Sciences
    South China Normal University
    Guangzhou, 510090, P.R. China
    e-mail

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