Results 21 to 30 of about 17,219 (295)

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

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

On the boundedness operator [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1975
This paper is a continuation of the study of the boundedness operator δ. By determination of the congruences (that is, collapsings) of the smallest lattice containing δ and closed under application of δ, a nev classification of all topological spaces is obtained according to boundedness criteria.
openaire   +3 more sources

ON SPECTRAL BOUNDEDNESS [PDF]

open access: yesJournal of the Korean Mathematical Society, 2003
Motivated by a result of \textit{R. E. Curto} and \textit{M. Mathieu} [Proc. Am. Math. Soc. 123, 2431--2434 (1995; Zbl 0822.47034)], the author investigates spectrally bounded and spectrally infinitesimal generalized inner derivations.
openaire   +3 more sources

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

Computing the area-minimizing surface by the Allen-Cahn equation with the fixed boundary

open access: yesAIMS Mathematics, 2023
The Allen-Cahn equation is a famous nonlinear reaction-diffusion equation used to study geometric motion and minimal hypersurfaces. This link has been scrutinized to construct minimal surfaces for many years.
Dongsun Lee
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

Analysis of a non-standard finite-difference-method for the classical target cell limited dynamical within-host HIV-model - Numerics and applications

open access: yesMathematical Biosciences and Engineering
Mathematical modeling and numerical simulation are valuable tools for getting theoretical insights into dynamic processes such as, for example, within-host virus dynamics or disease transmission between individuals.
Benjamin Wacker, Jan Christian Schlüter
doaj   +1 more source

On the boundedness of Hamiltonian operators [PDF]

open access: yesProceedings of the American Mathematical Society, 2002
Summary: We show that a non-negative Hamiltonian operator whose domain contains a maximal uniformly positive subspace is bounded.
Irina V. Gridneva   +2 more
openaire   +4 more sources

Impulsive Fractional-Like Differential Equations: Practical Stability and Boundedness with Respect to h-Manifolds

open access: yesFractal and Fractional, 2019
In this paper, an impulsive fractional-like system of differential equations is introduced. The notions of practical stability and boundedness with respect to h-manifolds for fractional-like differential equations are generalized to the impulsive case ...
Gani Stamov   +2 more
doaj   +1 more source

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