Results 81 to 90 of about 9,051,507 (186)

Lusin-type Theorems for Cheeger Derivatives on Metric Measure Spaces

open access: yesAnalysis and Geometry in Metric Spaces, 2015
A theorem of Lusin states that every Borel function onRis equal almost everywhere to the derivative of a continuous function. This result was later generalized to Rn in works of Alberti and Moonens-Pfeffer.
Guy C. David
doaj   +1 more source

Dependence results on almost periodic and almost automorphic solutions of evolution equations

open access: yesElectronic Journal of Differential Equations, 2010
We consider the semilinear evolution equations $x'(t) = A(t) x(t) + f(x(t), u(t),t)$ and $x'(t) = A(t) x(t) + f(x(t), zeta,t)$ where $A(t)$ is a unbounded linear operator on a Banach space X and f is a nonlinear operator.
Joel Blot   +2 more
doaj  

On the almost continuity of the diagonal of functions

open access: yes, 1999
Let \(\mathcal A_0\) be the set of almost continuous mappings of the real line, vanishing at the points of discontinuity. For \(f\in \mathcal A_0\), denote by \(\Delta _{\mathcal A_0}(f)\) the set of \(g\in \mathcal A_0\) such that the diagonal map \(f\Delta g\) defined by \(f\Delta g(x)=(f(x),g(x))\) is almost continuous and vanishes at the points of ...
Doliwa, Dariusz, Pawlak, Ryszard Jerzy
openaire   +2 more sources

Almost-homeomorphisms and aumosttopological properties [PDF]

open access: yes, 1986
A function is said to be an almosthomeomorphism if it is a bijective almost continuous function (see [25]) with an almost continuous inverse. We characterize such functions in several ways and obtain the relationship between almost-homeomorphisms and ...
Cammaroto, Filippo
core  

On Almost Continuous Mappings and Baire Spaces

open access: yes, 1978
It is proved, in particular, that a topological space X is a Baire space if and only if every real valued function f: X →R is almost continuous on a dense subset of X.
Shwu-Yeng T. Lin, You-Feng Lin
core   +1 more source

More on Almost Strongly-θ-β-Continuous Functions and Contra Almost-β-Continuous Functions

open access: yesAnnals of the Alexandru Ioan Cuza University - Mathematics, 2011
Summary: \(\beta\)-continuity was introduced by Abd El-Monsef et al. and then its weak forms were studied. In this paper, we continue our study on almost strongly-\(\theta\)-\(\beta\)-continuous functions introduced by Tahiliani and contra almost-\(\beta\)-continuous introduced by Baker.
openaire   +1 more source

THE ALMOST IDEAL SUPPLY SYSTEM AND AGRICULTURAL PRODUCTION IN THE UNITED STATES [PDF]

open access: yes
This paper estimates an Almost Ideal Supply System using aggregate U.S. agricultural data. Share equations derived from an indirect production function yield elasticities that are consistent with production theory.
Hilmer, Christiana E., Holt, Matthew T.
core  

neutrosophic pre-continuous multifunctions and almost pre-continuous multifunctions

open access: yes, 2019
In this paper, we introduce neutrosophic upper and neutrosophic lower almost pre-continuous-multifunctions as a generalization of neutrosophic multifunctions.
Al-Omeri, Wadei F.   +3 more
core   +1 more source

Upper semicontinuity of uniform attractors for singular perturbed second order nonautonomous delay lattice systems

open access: yesElectronic Journal of Differential Equations
In this article, we consider the upper semicontinuity of the uniform attractors for the singular perturbed second order nonautonomous delay lattice systems driven by the almost periodic forces as the coefficient of second order derivative term tends to ...
Yao Zhou, Hongliang Liu
doaj   +3 more sources

Synchronization of Discontinuous Neural Networks with Delays via Adaptive Control

open access: yesDiscrete Dynamics in Nature and Society, 2013
The drive-response synchronization of delayed neural networks with discontinuous activation functions is investigated via adaptive control. The synchronization of this paper means that the synchronization error approaches to zero for almost all time as ...
Xinsong Yang, Jinde Cao
doaj   +1 more source

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