Results 21 to 30 of about 16,356,505 (288)

The Coming Multi-Order World [PDF]

open access: yes, 2016
The article shows that the current international system is changing towards a completely new form of international system, conceptualized as a multi-order system. The suggestion for a multi-order world stands in contrast to three current narratives about
Flockhart, Trine
core   +1 more source

Oscillation criteria for even order nonlinear neutral differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we consider the oscillation criteria for even order nonlinear neutral differential equations of the form $$ \left(r(t)z^{(n-1)}(t)\right)'+q(t)f(x(\sigma(t)))=0, $$ where $z(t)=x(t)+p(t)x(\tau(t)),$ $n\geq2$ is a even integer.
Yibing Sun   +3 more
doaj   +1 more source

Even Order Half-Linear Differential Equations with Regularly Varying Coefficients

open access: yesMathematics, 2020
We establish nonoscillation criterion for the even order half-linear differential equation (−1)nfn(t)Φx(n)(n)+∑l=1n(−1)n−lβn−lfn−l(t)Φx(n−l)(n−l)=0, where β0,β1,…,βn−1 are real numbers, n∈N, Φ(s)=sp−1sgns for s∈R, p∈(1,∞) and fn−l is a regularly varying (
Vojtěch Růžička
doaj   +1 more source

Some Oscillation Results for Even-Order Differential Equations with Neutral Term

open access: yesFractal and Fractional, 2021
The objective of this work is to study some new oscillation criteria for even-order differential equation with neutral term rxzn−1xγ′+qxyγζx=0. By using the Riccati substitution and comparison technique, several new oscillation criteria are obtained for ...
Maryam Al-Kandari, Omar Bazighifan
doaj   +1 more source

Oscillation results for even order functional dynamic equations on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
By employing a generalized Riccati type transformation and the Taylor monomials, some new oscillation criteria for the even order functional dynamic equation \begin{equation*} \left( r(t)\left\vert x^{\Delta ^{n-1}}(t)\right\vert ^{\alpha -1}x^{\Delta ...
Ercan Tunç
doaj   +1 more source

Generalized hexagons of even order

open access: yesDiscrete Mathematics, 1992
The paper is concerned with properties of generalized polygons introduced by \textit{J. Tits} [Publ. Math., Inst. Haut. Etud. Sci. 2, 13--60 (1959; Zbl 0088.37204)] and extended by \textit{W. M. Kantor} [Lect. Notes Math. 1181, 79--158 (1986; Zbl 0599.51015)].
Cohen, A.M., Cooperstein, B.N.
openaire   +2 more sources

Oscillation of Even-Order Neutral Delay Differential Equations

open access: yesAdvances in Difference Equations, 2010
By using Riccati transformation technique, we will establish some new oscillation criteria for the even order neutral delay differential equations , , where is even, , , and .
Zhao Ping   +3 more
doaj   +2 more sources

The Krein-von Neumann extension of a regular even order quasi-differential operator [PDF]

open access: yesOpuscula Mathematica, 2021
We characterize by boundary conditions the Krein-von Neumann extension of a strictly positive minimal operator corresponding to a regular even order quasi-differential expression of Shin-Zettl type.
Minsung Cho   +3 more
doaj   +1 more source

Moufang Loops of Even Order

open access: yesJournal of Algebra, 1994
\textit{O. Chein} [Trans. Am. Math. Soc. 188, No. 2, 31-51 (1974; Zbl 0263.20007)] and \textit{M. Purtill} [J. Algebra 112, 122-128 (1988; Zbl 0644.20040)] investigated Moufang loops \(L\) of even order \(n\) and proved that \(L\) are groups if \(n = 2^ k\) \((0 \leq k \leq 4)\) or \(n = 2p\) (\(p\) is any prime) or \(n = 2p^ 2\).
Fook, L., Eng, T.P.
openaire   +1 more source

Totally Critical Even Order Graphs

open access: yesJournal of Combinatorial Theory, Series B, 1999
A connected graph \(G\) is totally critical if its total chromatic number is at least two more than its maximum degree and is reduced by the removal of an arbitrary edge. Let \(G(p,q)\) have maximum degree \(\Delta(G)\); the deficiency of \(G\) is given by \(\text{def}(G)= \Delta(G)p- 2q\).
G. M. Hamilton   +2 more
openaire   +2 more sources

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