نتایج جستجو برای: weakly contraction condition

تعداد نتایج: 411950  

Journal: :journal of linear and topological algebra (jlta) 0
g soleimani rad young researchers and elite club, central tehran branch, islamic azad university, tehran, iran. department of mathematics, faculty of science, islamic azad university, central tehran branch, po. code 13185-768, tehran, iran.

recently, rahimi et al. [comp. appl. math. 2013, in press] de ned the conceptof quadrupled xed point in k-metric spaces and proved several quadrupled xed pointtheorems for solid cones on k-metric spaces. in this paper some quadrupled xed point resultsfor t-contraction on k-metric spaces without normality condition are proved. obtainedresults extend and generalize well-known comparable result...

2014
M. R. Yadav A. K. Sharma B. S. Thakur

The purpose of this paper is to present a best proximity point theorems through rational expression for a combination of contraction condition, Kannan and Chatterjea nonlinear cyclic contraction in what we call MT-K and MT-C rational cyclic contraction. Some best proximity point theorems for a mapping satisfy these conditions have been established in metric spaces. We also give some examples to...

2013
Christoph Müller

Weakly rationalizable implementation represents a generalization of robust implementation to dynamic mechanisms. It is so conservative that virtual implementation in weakly rationalizable strategies is characterized by the same conditions as robust virtual implementation by static mechanisms. We show that despite that, (exact) weakly rationalizable implementation is more permissive than (exact)...

Journal: :journal of crop protection 2013
ali reza nemati mohammad reza kavianpour

soil-dwelling mites and among them gamasina (acari, mesostigmata) are widely distributed in soils, rich in species and have great ecological significance in the respective ecosystems. a survey was conducted to study laelapidae (mesostigmata) mites in ahwaz (khuzestan province), iran during 2010-2012. samples were taken from soil and litters and then mites extracted using berlese funnel, cleared...

Journal: :Mathematics 2021

The purpose of this paper is to introduce a new type contraction called fuzzy F-contraction. As compared the F-contraction in existing literature, our much simpler and more straightforward, since it contains only one condition—that is, function F strictly increasing. Moreover, some fixed-point theorems for are presented. Further, examples given illustrate its validity superiority. In addition, ...

2013
FRANÇOIS BOLLEY JOSÉ A. CARRILLO

It is well known that nonlinear diffusion equations can be interpreted as a gradient flow in the space of probability measures equipped with the Euclidean Wasserstein distance. Under suitable convexity conditions on the nonlinearity, due to R. J. McCann [10], the associated entropy is geodesically convex, which implies a contraction type property between all solutions with respect to this dista...

Journal: :Mathematical and Computer Modelling 2011
Wasfi A. Shatanawi

The purpose of this paper is to present some fixed point and coupled fixed point theorems for a nonlinear weakly C-contraction type mapping in metric and ordered metric spaces. Also, an example is given to support our results. Our results generalize several well-known results from the current literature.

ژورنال: پژوهش های ریاضی 2019

Introduction Suppose that  is a commutative ring with identity,  is a unitary -module and  is a multiplicatively closed subset of .  Factorization theory in commutative rings, which has a long history, still gets the attention of many researchers. Although at first, the focus of this theory was factorization properties of elements in integral domains, in the late nineties the theory was gener...

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