Results 101 to 110 of about 74,240 (211)

Comparison theorems for second-order neutral differential equations of mixed type

open access: yesElectronic Journal of Differential Equations, 2010
Three comparison theorems are established for the oscillation of the second-order neutral differential equations of mixed type $$ ig(r(t)[x(t)+p_1(t)x(t-sigma_1)+p_2(t)x(t+sigma_2)]'ig)' +q_1(t)x(t-sigma_3) +q_2(t)x(t+sigma_4)=0. $$ Our results are
Tongxing Li
doaj  

A converse comparison theorem for backward stochastic differential equations with jumps [PDF]

open access: yes
This paper establishes a converse comparison theorem for real-valued backward stochastic differential equations with jumps.Backward stochastic differential equation with jumps Comparison theorem Converse comparison ...
De Scheemaekere, Xavier
core  

An integral comparison theorem for cavitation diagrams [PDF]

open access: yes, 2011
In this paper we prove a comparison theorem for a functional whose positiveness is a necessary condition for the solvability of the problem of designing a hydrofoil by a given cavitation diagram. Original Russian Text © N.I. Manina and A.Ya.
Aksent'ev L., Maklakov D.
core  

Comparison theorems for differential games. I

open access: yesJournal of Differential Equations, 1972
The basic existence theory, of value and a saddle point, for (a) is given in [4] (see also [5]), and for (b) is given in [2, 31 (see also [S]). Our approach is to construct a family of games GA of fixed duration, with value VA, such that (i) the results of [6] can be applied to GA , and (ii) VA converges to the value V of the differential game under ...
openaire   +2 more sources

Existence of entire solutions for non-local delayed lattice differential equations

open access: yesElectronic Journal of Differential Equations, 2013
In this article we study entire solutions for a non-local delayed lattice differential equation with monostable nonlinearity. First, based on a concavity assumption of the birth function, we establish a comparison theorem.
Shi-Liang Wu, San-Yang Liu
doaj  

A comparison Theorem for matrix limitation methods with applications [PDF]

open access: yes, 2006
A comparison Theorem for matrix limitation methods is proved and the following applications are given: - new results concerning the comparison between weighted densities generated by different weights; - new results concerning the comparison between ...
GIULIANO, RITA, Pasteka M.
core  

Sturm-Picone type theorems for nonlinear differential systems

open access: yesElectronic Journal of Differential Equations, 2015
In this article, we establish a Picone-type inequality for a pair of first-order nonlinear differential systems. By using this inequality, we give Sturm-Picone type comparison theorems for these systems and a special class of second-order half-linear ...
Aydin Tiryaki
doaj  

Afriat’s Theorem for General Budget Sets [PDF]

open access: yes
Afriat (1967) showed the equivalence of the strong axiom of revealed preference and the existence of a solution to a set of linear inequalities. From this solution he constructed a utility function rationalizing the choices of a competitive consumer.
Francoise Forges, Enrico Minelli
core  

Oscillation of the solution to a singular differential equation

open access: yesElectronic Journal of Differential Equations, 1999
Let $u$ be a solution to the initial-value problem {eqnarray*} &u''(t) + frac{N-1}{t}u'(t) + u(t) + u(t)|u(t)|^{4/(N-2)} = 0, quad t in (0,T]& &u(0) = frac {1}{2},quad u' (0) = 0,.
Alexandra Kurepa, Hugh Weithers
doaj  

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