Results 71 to 80 of about 196,053,663 (109)

A Discrete Multivariate Mean Value Theorem with Applications [PDF]

open access: yes
AMS classifications: 47H10; 54H25; 55M20; 90C33; 91B50Discrete set;mean value theorem;fixed point;algorithm;equilibrium ...
Yang, Z.F., Talman, A.J.J.
core  

Fixed point free mappings which satisfy a Darbo type condition

open access: yes, 2006
We give constructions of continuous mappings on normed spaces which satisfy a Darbo type condition with respect to a measure of noncompactness and do not have fixed points or even have positive minimal displacement.
MALUTA, ELISABETTA, S. Prus, J. Wosko
core  

(SI10-003) Some New Fixed Point Theorem via Shifting Distance Functions [PDF]

open access: yes, 2022
In this paper, we present a new fixed point theorem involving non-compactness measures and shifting distance functions. This paper provides a generalization of the famous fixed point theorem of Banach.
Deuri, Bhuban Chandra
core  

Rakotch type extension of Darbo's fixed point theorem and an application

open access: yes
Summary: In this paper, we present a new extension of Darbo's fixed point theorem inspired by Rakotch's contraction. We also provide the alternative version of Leray-Schauder type of our new result. In order to demonstrate the applicability of our theoretical result, we present an existence theorem based on a functional equation. Finally, we provide an
Gençtürk, İlker   +2 more
openaire   +3 more sources

Fixed point theorems for set-valued contraction type maps in metric spaces

open access: yes, 2010
We first give some fixed point results for set-valued self-map contractions in complete metric spaces. Then we derive a fixed point theorem for nonself set-valued contractions which are metrically inward. Our results generalize many well-known results in
Amini-Harandi, A, O'Regan, D
core   +1 more source

Fixed points for mappings of cyclical type in ordered metric spaces

open access: yes, 2013
The purpose of this paper is to present some fixed point results for mappings of cyclical type in the context of ordered metric spaces. Our results extend the ones appearing in [A. Amini-Harandi, H.
Sadarangani, K.   +2 more
core  

A Schauder fixed point theorem in semilinear spaces and applications

open access: yes, 2013
In this paper we present existence and uniqueness results for a class of fuzzy fractional integral equations. To prove the existence result, we give a variant of the Schauder fixed point theorem in semilinear Banach spaces.peer ...
Vasile Lupulescu   +7 more
core   +1 more source

A theorem of Caristi-Kirk type for b-metric spaces

open access: yes
[EN] The renowned Caristi-Kirk theorem states that a metric space is complete if and only if every Caristi mapping on it has a fixed point. In this note we extend this result to the setting of b -metric spaces.Romaguera Bonilla, Salvador (2024).
Romaguera Bonilla, Salvador
core   +1 more source

Multivalued fixed point theorems in terms of weak topology and measure of weak noncompactness

open access: yes, 2013
We present several fixed point theorems for multimaps in Banach spaces, which in turn are multivalued versions of the Mönch, Daher, Darbo and Sadovskii theorems.
CARDINALI, Tiziana, RUBBIONI, Paola
core   +1 more source

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