Results 21 to 30 of about 302 (133)

Data Dependence, Strict Fixed Point Results, and Well-Posedness of Multivalued Weakly Picard Operators [PDF]

open access: yesJournal of Mathematics, 2021
In this paper, we introduce the notion of s , r -contractive multivalued weakly Picard ...
Azhar Hussain   +3 more
openaire   +3 more sources

Implicit functional differential equations with linear modification of the argument, via weakly Picard operator theory [PDF]

open access: yesCarpathian Journal of Mathematics, 2021
"Let \mathbf{K}:=\mathbf{R}\text{ or }\mathbf{C},\text{ \ }0<\lambda <1 and f \in C([0,b] \times \textbf{K}^3,\textbf{K}). In this paper we use the weakly Picard operator theory technique to study the following functional-differential equation $$ y'(x)=f(x,y(x),y'(x),y(\lambda x)), x \in [0,b].$$ "
ANTON S. MUREŞAN, VIORICA MUREŞAN
openaire   +1 more source

Ulam-Hyers stability for partial differential inclusions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
Using the weakly Picard operator technique, we will present Ulam-Hyers stability results for integral inclusions of Fredholm and Volterra type and for the Darboux problem associated to a partial differential inclusion.
V. Lazar
doaj   +1 more source

Multivalued Pseudo-Picard Operators and Fixed Point Results

open access: yesJournal of Function Spaces and Applications, 2013
We introduce the concept of multivalued pseudo-Picard (MPP) operator on a metric space. This concept is weaker than multivalued weakly Picard (MWP) operator, which is given by M. Berinde and V. Berinde (2007).
Gülhan Mınak, Özlem Acar, Ishak Altun
doaj   +1 more source

Dynamics and Ulam Stability for Fractional q-Difference Inclusions via Picard Operators Theory

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
In this manuscript, by using weakly Picard operators we investigate the Ulam type stability of fractional q-difference An illustrative example is given in the last section.
Abbas Saïd   +2 more
doaj   +1 more source

Systems of functional-differential equations with maxima, of mixed type

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this paper we study some properties of the solutions of a second order system of functional-differential equations with maxima, of mixed type, with ``boundary" conditions. We use Perov's fixed point theorem and the weakly Picard operator technique.
Diana Otrocol
doaj   +1 more source

Heuristic introduction to weakly Picard operator theory [PDF]

open access: yesCreative Mathematics and Informatics, 2014
In this paper we study the impact of weakly Picard operator theory, [see I. A. Rus, Picard operators and applications, Sc. Math. Japonicae, 58 (2003), No. 1, 191–219] on the following problem: what can we do in order to find conditions under which a given operator is a weakly Picard operator?
openaire   +2 more sources

Iterated function systems consisting of continuous functions satisfying Banach’s orbital condition

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
We introduce the concept of iterated function system consisting of continuous functions satisfying Banach’s orbital condition and prove that the fractal operator associated to such a system is weakly Picard. Some examples are provided.
Miculescu Radu   +2 more
doaj   +1 more source

A class of abstract Volterra equations, via weakly Picard operators technique [PDF]

open access: yesMathematical Inequalities & Applications, 2010
Summary: We consider the following abstract Volterra equations: \[ x(t) = G(t,g(x)(t),x(t),x(0)) + \int ^t_{-t} K (t,s,x(s),x(h(s)))\,ds,\quad t \in \mathbb R \] and \[ x(t) = G(t,g(x)(t),x(t),x(0)) + \int ^{|t|}_{-|t|} K (t,s,x(s),x(h(s)))\,ds,\quad t \in\mathbb R.
Şerban, M. A.   +2 more
openaire   +2 more sources

The Theory of Reich's Fixed Point Theorem for Multivalued Operators

open access: yesFixed Point Theory and Applications, 2010
The purpose of this paper is to present a theory of Reich's fixed point theorem for multivalued operators in terms of fixed points, strict fixed points, multivalued weakly Picard operators, multivalued Picard operators, data dependence of the fixed ...
Tania Laz&#259;r   +3 more
doaj   +1 more source

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