Results 31 to 40 of about 93,517 (188)

Fixed point results for condensing operators via measure of non-compactness

open access: yesVestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022
In this paper, we prove some fixed point theorems for condensing operators in the setting of Banach spaces via measure of non-compactness, without using regularity. Our results improve and generalize many known results in the literature.
Touail, Youssef   +2 more
openaire   +1 more source

On the Hausdorff measure of non-compactness for the parametrized Prokhorov metric [PDF]

open access: yes, 2016
We quantify Prokhorov's Theorem by establishing an explicit formula for the Hausdorff measure of non-compactness (HMNC) for the parametrized Prokhorov metric on the set of Borel probability measures on a Polish space.
Berckmoes, Ben
core   +3 more sources

Existence results of solutions for impulsive fractional differential equations

open access: yesNonautonomous Dynamical Systems, 2018
We analyze the existence of solution for the neutral fractional integro-differential equation (FDE) of order in the interval (1, 2] with impulsive and integral boundary conditions (IBCs).
Gupta Vidushi   +2 more
doaj   +1 more source

Absolute Continuity Theorem for Random Dynamical Systems on $R^d$ [PDF]

open access: yes, 2012
In this article we provide a proof of the so called absolute continuity theorem for random dynamical systems on $R^d$ which have an invariant probability measure. First we present the construction of local stable manifolds in this case. Then the absolute
Anosov D. V.   +5 more
core   +1 more source

An application of approach theory to the relative Hausdorff measure of non-compactness for the Wasserstein metric [PDF]

open access: yes, 2016
After shortly reviewing the fundamentals of approach theory as introduced by R. Lowen in 1989, we show that this theory is intimately related with the well-known Wasserstein metric on the space of probability measures with a finite first moment on a ...
B. Berckmoes   +3 more
semanticscholar   +1 more source

Information theoretic measures of dependence, compactness, and non-gaussianity for multivariate probability distributions [PDF]

open access: yesNonlinear Processes in Geophysics, 2009
A basic task of exploratory data analysis is the characterisation of "structure" in multivariate datasets. For bivariate Gaussian distributions, natural measures of dependence (the predictive relationship between individual variables) and ...
A. H. Monahan, T. DelSole
doaj  

On a measure of non‐compactness for singular integrals [PDF]

open access: yesJournal of Function Spaces, 2003
It is proved that there exists no weight pair (v,  w) for which a singular integral operator is compact from the weighted Lebesgue space to . Moreover, a measure of non‐compatness for this operator is estimated from below. Analogous problems for Cauchy singular integrals defined on Jordan smooth curves are studied.
openaire   +3 more sources

Progressive contractions, measures of non-compactness and quadratic integral equations [PDF]

open access: yesDifferential Equations & Applications, 2019
The authors use the method of progressive contractions and the measures of non-compactness to obtain a unique asymptotically stable solution of the quadratic integral equation \[ x(t) = g(t, x(t)) + f (t, x(t)) \int_0^t (t-s)^{\beta-1} v(t, s, x(s))ds,\quad t\geq0. \] In my opinion this paper is very nice and very interesting.
Burton, T. A., Purnaras, I. K.
openaire   +2 more sources

Implicit Measures of Lostness and Success in Web Navigation [PDF]

open access: yes, 2007
In two studies, we investigated the ability of a variety of structural and temporal measures computed from a web navigation path to predict lostness and task success. The user’s task was to find requested target information on specified websites. The web
Gwizdka, Jacek, Spence, Ian
core   +1 more source

Measure of non-compactness and interpolation methods associated to polygons [PDF]

open access: yesGlasgow Mathematical Journal, 1999
We establish an estimate for the measure of non-compactness of an interpolated operator acting from a J-space into a K-space. Our result refers to general Banach N-tuples. We also derive estimates for entropy numbers if some of the N-tuples reduce to a single Banach space.
Cobos, Fernando   +2 more
openaire   +1 more source

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