Results 21 to 30 of about 189,665 (251)

Sharp results for oscillation of second-order neutral delay differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
The aim of the present paper is to continue earlier works by the authors on the oscillation problem of second-order half-linear neutral delay differential equations.
Martin Bohner   +2 more
doaj   +1 more source

More Effective Conditions for Testing the Oscillatory Behavior of Solutions to a Class of Fourth-Order Functional Differential Equations

open access: yesAxioms, 2023
This paper presents an investigation into the qualitative behavior of solutions for a specific class of fourth-order half-linear neutral differential equations.
Hail S. Alrashdi   +4 more
doaj   +1 more source

On Some Novel Results About the Behavior of Some Numerical Solutions of a Neutrosophic Generalized Half – Linear Second Order Differential Equation [PDF]

open access: yesNeutrosophic Sets and Systems
The generalized neutrosophic differential equation is a differential equation with neutrosophic real variable x + yI instead of classical real variable x. This research is devoted to studying the oscillation of generalized neutrosophic half linear second
Norah Mousa Alrayes   +5 more
doaj   +1 more source

Non-linear diffusion of cosmic rays escaping from supernova remnants - I. The effect of neutrals [PDF]

open access: yes, 2016
Supernova remnants are believed to be the main sources of galactic Cosmic Rays (CR). Within this framework, particles are accelerated at supernova remnant shocks and then released in the interstellar medium.
Gabici, Stefano   +4 more
core   +4 more sources

Oscillation criteria for second-order neutral delay differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
New sufficient conditions for oscillation of second-order neutral half-linear delay differential equations are given. Our results essentially improve, complement and simplify a number of related ones in the literature, especially those from a recent ...
Martin Bohner   +2 more
doaj   +1 more source

Hamiltonians with Riesz Bases of Generalised Eigenvectors and Riccati Equations [PDF]

open access: yes, 2010
An algebraic Riccati equation for linear operators is studied, which arises in systems theory. For the case that all involved operators are unbounded, the existence of infinitely many selfadjoint solutions is shown. To this end, invariant graph subspaces
Wyss, Christian
core   +1 more source

Oscillation of Half-Linear Differential Equations with Delay

open access: yesAbstract and Applied Analysis, 2013
We study the half-linear delay differential equation , , We establish a new a priori bound for the nonoscillatory solution of this equation and utilize this bound to derive new oscillation criteria for this equation in terms of oscillation criteria for ...
Simona Fišnarová, Robert Mařík
doaj   +1 more source

Oscillatory behavior of the second order noncanonical differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
Establishing monotonical properties of nonoscillatory solutions we introduce new oscillatory criteria for the second order noncanonical differential equation with delay/advanced argument \begin{equation*} (r(t)y'(t))'+p(t)y(\tau(t))=0. \end{equation*}
Blanka Baculíková
doaj   +1 more source

Stoneley waves and interface stability of Bell materials in compression; Comparison with rubber [PDF]

open access: yes, 2012
Two semi-infinite bodies made of prestressed, homogeneous, Bell-constrained, hyperelastic materials are perfectly bonded along a plane interface. The half-spaces have been subjected to finite pure homogeneous predeformations, with distinct stretch ratios
Destrade, Michel
core   +2 more sources

Eigenvalue enclosures and exclosures for non-self-adjoint problems in hydrodynamics [PDF]

open access: yes, 2010
In this paper we present computer-assisted proofs of a number of results in theoretical fluid dynamics and in quantum mechanics. An algorithm based on interval arithmetic yields provably correct eigenvalue enclosures and exclosures for non-self-adjoint ...
Drazin   +9 more
core   +1 more source

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