Results 121 to 130 of about 2,136 (215)

Nonoscillation for Functional Differential Equations of Mixed Type

open access: yesJournal of Mathematical Analysis and Applications, 2000
It is considered the linear autonomous functional-differential equation \[ \dot x(t)+ \int^1_{-1} (d\mu(s)) x(t+ s)= 0 \] which is of mixed (retarted/advanced) type. An example shows that such equations may be nonoscillatory in spite of the existence of the real roots of the characteristic equation.
openaire   +1 more source

Eigenvalues of the -Laplacian and disconjugacy criteria

open access: yesJournal of Inequalities and Applications, 2006
We derive oscillation and nonoscillation criteria for the one-dimensional -Laplacian in terms of an eigenvalue inequality for a mixed problem. We generalize the results obtained in the linear case by Nehari and Willett, and the proof is based on a ...
Pinasco Juan P, De Napoli Pablo L
doaj  

Existence of positive solutions of advanced differential equations [PDF]

open access: yes, 2013
Feifei Cui   +3 more
core   +1 more source

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