Results 91 to 100 of about 175,704,569 (186)

Measures of Noncompactness in Regular Spaces

open access: yesCanadian Mathematical Bulletin, 2014
AbstractPrevious results by the author on the connection between three measures of noncompactness obtained for Lp are extended to regular spaces of measurable functions. An example is given of the advantages of some cases in comparison with others. Geometric characteristics of regular spaces are determined.
openaire   +2 more sources

Hausdorff measure of noncompactness of matrix operators on some new difference sequence spaces

open access: yesJournal of Inequalities and Applications, 2016
The new sequence spaces X ( r , s , t ; Δ ) $X(r,s,t;\Delta)$ for X ∈ { l ∞ , c , c 0 } $X\in\{l_{\infty}, c, c_{0}\}$ have been defined by using generalized means and difference operator.
Elahe Abyar, Mohammad Bagher Ghaemi
doaj   +1 more source

Measure of Noncompactness for Compact Matrix Operators on Some BK Spaces

open access: yesJournal of Function Spaces, 2014
We study the spaces w0p, wp, and w∞p of sequences that are strongly summable to 0, summable, and bounded with index p≥1 by the Cesàro method of order 1 and establish the representations of the general bounded linear operators from the spaces wp into the ...
E. Malkowsky, A. Alotaibi
doaj   +1 more source

Some Properties of Measures of Noncompactness in Paranormed Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
This paper presents new properties of important measures of noncompactness in paranormed spaces. Using these properties some fixed point theorems for multivalued mappings in general topological vector spaces are obtained in a straightforward way.
openaire   +2 more sources

Geometrical Coefficients and Measures of Noncompactness [PDF]

open access: yes, 1992
This thesis studies various measures of noncompactness and some geometrical coefficients in metric or Bauach spaces. These geometrical numbers are useful in the study of measures of noncompactness, some of which are interesting quantities in fixed point ...
Zhao, Weiyu
core   +2 more sources

MEASURE OF NONCOMPACTNESS IN THE STUDY OF SOLUTIONS FOR A SYSTEM OF INTEGRAL EQUATIONS [PDF]

open access: yes, 2019
WOS: 000462503300006In this work, we prove the existence of solutions for a tripled system of integral equations using some new results of fixed point theory associated with measure of noncompactness.
Sekman, Derya   +3 more
core  

Generalized Caputo Proportional Boundary Value Langevin Fractional Differential Equations via Kuratowski Measure of Noncompactness

open access: yes
This manuscript aims to discuss the existence of solutions for nonlinear boundary value Langevin fractional differential equations involving the generalized Caputo proportional fractional derivative via Kuratowski measure of noncompactness in an arbitrary
AHMED KAJOUNI   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy