Results 31 to 40 of about 6,601 (154)

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 Lazăr   +3 more
doaj   +1 more source

A general class of noninstantaneous impulsive fractional differential inclusions in Banach spaces

open access: yesAdvances in Difference Equations, 2017
In this paper we introduce the concept of a PC-mild solution to a general new class of noninstantaneous impulsive fractional differential inclusions involving the generalized Caputo derivative with the lower bound at zero in infinite dimensional Banach ...
JinRong Wang   +3 more
doaj   +1 more source

Iterative functional-differential system with retarded argument

open access: yesJournal of Numerical Analysis and Approximation Theory, 2006
Existence, uniqueness and data dependence results of solution to the Cauchy problem for iterative functional-differential system with delays are obtained using weakly Picard operator theory.
Diana Otrocol
doaj   +2 more sources

Ulam-Hyers stability of fixed point equations for multivalued operators on KST spaces [PDF]

open access: yesSurveys in Mathematics and its Applications, 2014
In this paper we define the notions of Ulam-Hyers stability on KST spaces and cw-weakly Picard operator for the multivalued operators case in order to establish a relation between these.
Liliana Guran Manciu
doaj  

Implicit Fractional Differential Equations in Banach Spaces via Picard and Weakly Picard Operator Theory

open access: yes, 2020
In this paper, by employing fixed-point methods, we obtain the existence and uniqueness results for the nonlinear implicit fractional differential equations in Banach spaces. Further, we obtain the uniqueness, dependence of the solution on the initial condition as well as on the functions involved on the right-hand side by means of Picard and weakly ...
Sutar, Sagar T., Kucche, Kishor D.
openaire   +3 more sources

Krasnoselskii's theorem in generalized Banach spaces and application

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
The purpose of this paper is to extend Krasnoselskii's fixed point theorem to the case of generalized Banach spaces for singlevalued and multivalued operators.
I. R. Petre, Adrian Petrusel
doaj   +1 more source

Linear Sigma Models With Strongly Coupled Phases -- One Parameter Models

open access: yes, 2013
We systematically construct a class of two-dimensional $(2,2)$ supersymmetric gauged linear sigma models with phases in which a continuous subgroup of the gauge group is totally unbroken.
Hori, Kentaro, Knapp, Johanna
core   +1 more source

Multivalued weakly Picard operators via simulation functions with application to functional equations

open access: yesAIMS Mathematics, 2020
<abstract> <p>The aim of this paper is to introduce the notion of Suzuki type multivalued contraction with simulation functions and then to set up some new fixed point and data dependence results for these type of contraction mappings. We produce an example to support our results.
Azhar Hussain   +3 more
openaire   +3 more sources

From a Dieudonne theorem concerning the Cauchy problem to an open problem in the theory of weakly Picard operators [PDF]

open access: yesCarpathian Journal of Mathematics, 2014
Let (X, d) be a complete metric space and let f : X → X be a self operator. In this paper we study the following two problems: Problem 1. Let f be such that its fixed points set is a singleton, i.e., Ff = {x∗}. Under which conditions the next implication does hold: f is asymptotically regular ⇒ f is a Picard operator? Problem 2.
Berinde, Vasile   +2 more
openaire   +2 more sources

Fixed points for multivalued contractions on a metric space [PDF]

open access: yesSurveys in Mathematics and its Applications, 2010
The purpose of this paper is to prove a fixed point theorem for multivalued operators and a fixed point theorem for multivalued weakly Picard operators in the terms of τ -distance.
Liliana Guran
doaj  

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