Results 21 to 30 of about 1,593 (172)

Nonoscillation and Eventual Disconjugacy [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
If every solution of an nth order linear differential equation has only a finite number of zeros in [ 0 , ∞ ) [0,\infty ) , it is not generally true that for sufficiently large c , c > 0 c,c > 0 , every solution has at most n
openaire   +1 more source

Wintner-type nonoscillation theorems for conformable linear Sturm-Liouville differential equations [PDF]

open access: yesOpuscula Mathematica
In this study, we addressed the nonoscillation of th Sturm-Liouville differential equation with a differential operator, which corresponds to a proportional-derivative controller. The equation is a conformable linear differential equation. A Wintner-type
Kazuki Ishibashi
doaj   +1 more source

On a computer-aided approach to the computation of Abelian integrals [PDF]

open access: yes, 2011
An accurate method to compute enclosures of Abelian integrals is developed. This allows for an accurate description of the phase portraits of planar polynomial systems that are perturbations of Hamiltonian systems.
A. Neumaier   +27 more
core   +2 more sources

Nonoscillation and integral inequalities [PDF]

open access: yesBulletin of the American Mathematical Society, 1974
Publisher Summary This chapter discusses nonoscillation and integral inequalities. The chapter presents an assumption involving a system dy/dt = A(t) y where A = (a jk ) n 1 is an n × n real valued matrix and y = (y 1 , …, y n ) is an n column real valued vector.
openaire   +4 more sources

Asymptotic behavior of nonoscillatory solutions of higher-order integro-dynamic equations [PDF]

open access: yesOpuscula Mathematica, 2014
In this paper, we establish some new criteria on the asymptotic behavior of nonoscillatory solutions of higher-order integro-dynamic equations on time scales.
Martin Bohner   +2 more
doaj   +1 more source

Some nonoscillation criteria for inclusions [PDF]

open access: yesJournal of the Australian Mathematical Society, 2006
AbstractNew nonoscillatory criteria are presented for second order differential inclusions. The theory relies on Ky Fan's fixed point theorem for upper semicontinuous multifunctions.
Agarwal, Ravi P.   +2 more
openaire   +3 more sources

Nontrivial solutions of boundary value problems for second order functional differential equations [PDF]

open access: yes, 2015
In this paper we present a theory for the existence of multiple nontrivial solutions for a class of perturbed Hammerstein integral equations. Our methodology, rather than to work directly in cones, is to utilize the theory of fixed point index on affine ...
Calamai, Alessandro, Infante, Gennaro
core   +1 more source

Nonoscillation of Linear Difference Systems

open access: yesJournal of Mathematical Analysis and Applications, 1994
For the system \(\Delta x = A(t)x\) with \(\Delta x(t) = x(t + 1) - x(t)\), similar nonoscillatory conditions are obtained as in the well known case \(x'(t) = A(t)x\), cf. \textit{S. Friedland} [Mem. Am. Math. Soc. 176 (1976; Zbl 0348.34023)]. In particular, the two-dimensional case is considered in detail.
Lafaut, R.N., Muldowney, J.S.
openaire   +2 more sources

The Oscillatory of Linear Conformable Fractional Differential Equations of Kamenev Type

open access: yesDiscrete Dynamics in Nature and Society, Volume 2020, Issue 1, 2020., 2020
In this paper, the oscillatory of the Kamenev‐type linear conformable fractional differential equations in the form of ptyα+1tα+yα+1t+qtyt=0 is studied, where t ≥ t0 and 0 < α ≤ 1. By employing a generalized Riccati transformation technique and integral average method, we obtain some oscillation criteria for the equation.
Hui Liu, Run Xu, Francisco R. Villatoro
wiley   +1 more source

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