scholarly journals Fuzzy fixed points of generalized F2-Geraghty type fuzzy mappings and complementary results

2016 ◽  
Vol 21 (2) ◽  
pp. 274-292 ◽  
Author(s):  
Mujahid Abbas ◽  
Basit Ali ◽  
Ornella Rizzo ◽  
Calogero Vetro
Keyword(s):  
Fixed Point ◽  
Computer Science ◽  
Fixed Points ◽  
Metric Space ◽  
Type Theorem ◽  
Theoretical Computer Science ◽  
Theoretical Computer ◽  
Hybrid Pair ◽  
Fuzzy Fixed Point

The aim of this paper is to introduce generalized F2-Geraghty type fuzzy mappings on a metric space for establishing the existence of fuzzy fixed points of such mappings. As an application of our result, we obtain the existence of common fuzzy fixed point for a generalized F2-Geraghty type fuzzy hybrid pair. These results unify, generalize and complement various known comparable results in the literature. An example and an application to theoretical computer science are presented to support the theory proved herein. Also, to suggest further research on fuzzy mappings, a Feng–Liu type theorem is proved.

scholarly journals Fixed-Point Models for Theories of Properties and Classes

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Greg Restall
Keyword(s):  
Fixed Point ◽  
Computer Science ◽  
Fixed Points ◽  
Classical Logic ◽  
Lambda Calculus ◽  
Theoretical Computer Science ◽  
Point Model ◽  
Theoretical Computer ◽  
Minority Community ◽  
Shed Light

There is a vibrant (but minority) community among philosophical logicians seeking to resolve the paradoxes of classes, properties and truth by way of adopting some non-classical logic in which trivialising paradoxical arguments are not valid. There is also a long tradition in theoretical computer science|going back to Dana Scott's fixed point model construction for the untyped lambda-calculus of models allowing for fixed points. In this paper, I will bring these traditions closer together, to show how these model constructions can shed light on what we could hope for in a non-trivial model of a theory for classes, properties or truth featuring fixed points.

scholarly journals On Fuzzy Fixed Points for Fuzzy Maps with Generalized Weak Property

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Marwan Amin Kutbi ◽  
Jamshaid Ahmad ◽  
Akbar Azam ◽  
Nawab Hussain
Keyword(s):  
Fixed Point ◽  
Fixed Points ◽  
Metric Space ◽  
Sufficient Conditions ◽  
Weak Property ◽  
Complex Valued Metric Space ◽  
Fuzzy Fixed Point ◽  
Complex Valued ◽  
Fuzzy Subsets

Let(X,d)be a complex valued metric space and letS,Tbe mappings fromXto a set of all fuzzy subsets ofX. We present sufficient conditions for the existence of a commonα-fuzzy fixed point ofSandT. Our results improve and extend certain recent results in literature. Moreover, we discuss an illustrative example to highlight the realized improvements.

A new Ф-generalized quasi metric space with some fixed point results and applications

Filomat ◽  
2017 ◽  
Vol 31 (11) ◽  
pp. 3157-3172
Author(s):  
Mujahid Abbas ◽  
Bahru Leyew ◽  
Safeer Khan
Keyword(s):  
Fixed Point ◽  
Differential Equations ◽  
Fixed Points ◽  
Periodic Solutions ◽  
Metric Space ◽  
Delay Differential Equations ◽  
Fixed Point Theorems ◽  
Metric Spaces ◽  
Existence Of Periodic Solutions ◽  
Delay Differential

In this paper, the concept of a new ?-generalized quasi metric space is introduced. A number of well-known quasi metric spaces are retrieved from ?-generalized quasi metric space. Some general fixed point theorems in a ?-generalized quasi metric spaces are proved, which generalize, modify and unify some existing fixed point theorems in the literature. We also give applications of our results to obtain fixed points for contraction mappings in the domain of words and to prove the existence of periodic solutions of delay differential equations.

scholarly journals Solution of Some Impulsive Differential Equations via Coupled Fixed Point

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 501
Author(s):  
Ahmed Boudaoui ◽  
Khadidja Mebarki ◽  
Wasfi Shatanawi ◽  
Kamaleldin Abodayeh
Keyword(s):  
Fixed Point ◽  
Differential Equations ◽  
Fixed Points ◽  
Metric Space ◽  
Fixed Point Theorems ◽  
Coupled Fixed Point ◽  
Sufficient Conditions ◽  
Impulsive Differential Equations ◽  
System Of Differential Equations ◽  
Coupled Fixed Points

In this article, we employ the notion of coupled fixed points on a complete b-metric space endowed with a graph to give sufficient conditions to guarantee a solution of system of differential equations with impulse effects. We derive recisely some new coupled fixed point theorems under some conditions and then apply our results to achieve our goal.

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