Results 31 to 40 of about 11,648,998 (193)

New Results for Kneser Solutions of Third-Order Nonlinear Neutral Differential Equations [PDF]

open access: yesMathematics, 2020
In this paper, we consider a certain class of third-order nonlinear delay differential equations r w ″ α ′ v + q v x β ς v = 0 , for v ≥ v 0 , where w v = x v + p v x ϑ v . We obtain new criteria for oscillation of all solutions of this nonlinear equation.
Osama Moaaz   +3 more
openaire   +2 more sources

Kneser Farm, Lamington Road.

open access: yes, 1979
A distant view of the Kneser Farm located on Lamington Road near Cold Spring Road.

core   +1 more source

Kneser Farms barns and silo on Lamington Road.

open access: yes, 1979
Close up of barns and silo on the Kneser Farm on Lamington Road when the property was owned by Liz and Joe ...

core   +1 more source

Improved Solution–Function Inequalities and Kneser-Type Oscillation Criteria for Noncanonical Neutral Differential Equations with Continuous Delay

open access: yesAxioms
This paper investigates the oscillatory behavior of second-order noncanonical neutral differential equations involving a neutral term with continuous delay and distributed deviating arguments.
Osama Moaaz, Asma Al-Jaser
semanticscholar   +1 more source

Sparse Kneser graphs are Hamiltonian [PDF]

open access: yes, 2021
For integers~$k\geq 1$ and~$n\geq 2k+1$, the \emph{Kneser graph}~$K(n,k)$ is the graph whose vertices are the $k$-element subsets of~$\{1,\ldots,n\}$ and whose edges connect pairs of subsets that are disjoint.
Mutze, Torsten   +2 more
core   +1 more source

On the chromatic number of q-Kneser graphs [PDF]

open access: yes, 2011
We show that the q-Kneser graph $qK_{2k:k}$ (the graph on the k-subspaces of a 2k-space over GF(q), where two k-spaces are adjacent when they intersect trivially), has chromatic number $q^k + q^{k-1}$ for k = 3 and for k
A. E. Brouwer   +8 more
core   +1 more source

The Long Shadow of Karl Weierstraß Over the Calculus of Variations

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT At first glance, it appears that the contents of Karl Weierstraß's (1815–1897) lecture courses on the calculus of variations were made available to the public only in the seventh volume of his Mathematische Werke, and thus not until 30 years after his death.
Peter Ullrich
wiley   +1 more source

Singular Kneser solutions of higher-order quasilinear ordinary differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
Summary: In this paper we give a new sufficient condition in order that all nontrivial Kneser solutions of the quasilinear ordinary differential equation \[ D(\alpha_n, \alpha_{n-1}, \dots, \alpha_1)x = (-1)^{n}p(t)\vert x\vert ^{\beta}{\text{sgn}}\,x, \;\; t \geq a, \;\; (1)\] are singular. Here, \(D(\alpha_n, \alpha_{n-1}, \dots, \alpha_1)\) is the \(
openaire   +4 more sources

Signed Projective Cubes, a Homomorphism Point of View

open access: yesJournal of Graph Theory, Volume 113, Issue 1, Page 38-56, September 2026.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen   +2 more
wiley   +1 more source

Sensitivity and Hamming Graphs

open access: yesJournal of Graph Theory, Volume 112, Issue 3, Page 296-305, July 2026.
ABSTRACT For any m ≥ 3 we show that the Hamming graph H ( n , m ) admits an imbalanced partition into m sets, each inducing a subgraph of low maximum degree. This improves previous results by Tandya and by Potechin and Tsang, and disproves the Strong m‐ary Sensitivity Conjecture of Asensio, García‐Marco, and Knauer.
Sara Asensio   +3 more
wiley   +1 more source

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