Results 111 to 120 of about 37,895 (200)

Positive solutions for fractional differential equations with variable coefficients

open access: yesElectronic Journal of Differential Equations, 2012
In this article, we study the existence of the positive solutions for a class of differential equations of fractional order with variable coefficients.
Yi Chen, Zhanmei Lv
doaj  

Second-order n -point eigenvalue problems on time scales

open access: yesAdvances in Difference Equations, 2006
We discuss conditions for the existence of at least one positive solution to a nonlinear second-order Sturm-Liouville-type multipoint eigenvalue problem on time scales.
doaj  

A generalization of Gordon's theorem and applications to quasiperiodic Schrodinger operators

open access: yesElectronic Journal of Differential Equations, 2000
We present a criterion for absence of eigenvalues for one-dimensional Schrodinger operators. This criterion can be regarded as an L^1-version of Gordon's theorem and it has a broader range of application.
David Damanik, Gunter Stolz
doaj  

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