Results 11 to 20 of about 137,177 (285)

Separating Polynomial $$\chi $$-Boundedness from $$\chi $$-Boundedness

open access: yesCombinatorica, 2023
AbstractExtending the idea from the recent paper by Carbonero, Hompe, Moore, and Spirkl, for every function $$f:\mathbb {N}\rightarrow \mathbb {N}\cup \{\infty \}$$ f : N → N ∪ {
Briański, Marcin   +2 more
openaire   +5 more sources

$R$ -Boundedness versus $\gamma$ -boundedness

open access: yesArkiv för Matematik, 2016
It is well-known that in Banach spaces with finite cotype, the $R$-bounded and $\gamma$-bounded families of operators coincide. If in addition $X$ is a Banach lattice, then these notions can be expressed as square function estimates. It is also clear that $R$-boundedness implies $\gamma$-boundedness.
Kwapień, Stanislaw   +2 more
openaire   +5 more sources

Chemotaxis-Stokes interaction with very weak diffusion enhancement: Blow-up exclusion via detection of absorption-induced entropy structures involving multiplicative couplings

open access: yesAdvanced Nonlinear Studies, 2022
The chemotaxis–Stokes system nt+u⋅∇n=∇⋅(D(n)∇n)−∇⋅(nS(x,n,c)⋅∇c),ct+u⋅∇c=Δc−nc,ut=Δu+∇P+n∇Φ,∇⋅u=0,\left\{\begin{array}{l}{n}_{t}+u\cdot \nabla n=\nabla \cdot (D\left(n)\nabla n)-\nabla \cdot (nS\left(x,n,c)\cdot \nabla c),\\ {c}_{t}+u\cdot \nabla c ...
Winkler Michael
doaj   +1 more source

The Concept of Telicity in English, Romanian and Serbian

open access: yesRomanian Journal of English Studies, 2020
Given that the notion of telicity was simply defined by English linguists as a situation which tends towards a goal, this paper will additionally explain and define telicity in the English language.
Lazović Mihaela
doaj   +1 more source

Design, Analysis and Comparison of a Nonstandard Computational Method for the Solution of a General Stochastic Fractional Epidemic Model

open access: yesAxioms, 2021
Malaria is a deadly human disease that is still a major cause of casualties worldwide. In this work, we consider the fractional-order system of malaria pestilence. Further, the essential traits of the model are investigated carefully.
Nauman Ahmed   +6 more
doaj   +1 more source

A survey of χ‐boundedness

open access: yesJournal of Graph Theory, 2020
AbstractIf a graph has bounded clique number and sufficiently large chromatic number, what can we say about its induced subgraphs? András Gyárfás made a number of challenging conjectures about this in the early 1980s, which have remained open until recently; but in the last few years there has been substantial progress. This is a survey of where we are
Alex Scott, Paul Seymour
openaire   +4 more sources

A note on the qualitative analysis of Volterra integro-differential equations

open access: yesJournal of Taibah University for Science, 2019
The aim of paper is to analyse some qualitative properties of solutions of nonlinear Volterra integro-differential equations (VIDDEs) with constant delay and Volterra integro-differential equations (VIDEs) without delay by means of the Razumikhin method.
Cemil Tunç, Osman Tunç
doaj   +1 more source

Boundedness of cohomology

open access: yesJournal of Algebra, 2010
18 ...
Brodmann-Maeder, Monika   +2 more
openaire   +4 more sources

Some Dynamical Behaviors of Fractional-Order Commutative Quaternion-Valued Neural Networks via Direct Method of Lyapunov

open access: yesIEEE Access, 2021
Some dynamical behaviors of fractional-order commutative quaternion-valued neural networks (FCQVNNs) are studied in this paper. First, because the commutative quaternion does not satisfy Schwartz triangle inequality, the FCQVNNs are divided into four ...
Yannan Xia   +3 more
doaj   +1 more source

Norm estimates for Bessel-Riesz operators on generalized Morrey spaces [PDF]

open access: yes, 2018
We revisit the properties of Bessel-Riesz operators and refine the proof of the boundedness of these operators on generalized Morrey spaces using Young's inequality. We also obtain an estimate for the norm of these operators on generalized Morrey spaces.
Eridani   +2 more
core   +3 more sources

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