نتایج جستجو برای: self mappings

تعداد نتایج: 546875  

2014
M. De la Sen Zhen Jin

A set of np ≥2 -cyclic and either continuous or contractive self-mappings, with at least one of them being contractive, which are defined on a set of subsets of a Banach space, are considered to build a composed self-mapping of interest. The existence and uniqueness of fixed points and the existence of best proximity points, in the case that the subsets do not intersect, of such composed mappin...

The main purpose of this paper is to obtain sufficient conditions for existence of points of coincidence and common fixed points for a pair of self mappings satisfying some expansive type conditions in $b$-metric spaces. Finally, we investigate that the equivalence of one of these results in the context of cone $b$-metric spaces cannot be obtained by the techniques using scalarization function....

2004
Daniel Faraco Pekka Koskela Xiao Zhong

This paper investigates the self-improving integrability properties of the so-called mappings of finite distortion. Let K(x) ≥ 1 be a measurable function defined on a domain Ω ⊂ R, n ≥ 2, and such that exp(βK(x)) ∈ Lloc(Ω), β > 0. We show that there exist two universal constants c1(n), c2(n) with the following property: Let f be a mapping in W 1,1 loc (Ω,R ) with |Df(x)| ≤ K(x)J(x, f) for a.e. ...

Journal: :Applied Mathematics and Computation 2009
Ljubomir Ciric Nenad Cakic

In this paper, we introduce the concept of a contractive type non-self mappings for a two pair of multi-valued and single-valued mappings in metric spaces and prove some results on coincidence and common fixed points in complete convex metric spaces. Our theorems generalize and improve the theorems of Imdad and Khan [M. Imdad, L. Khan, Some common fixed point theorems for a family of mappings i...

In this paper, we prove the existence and uniqueness of fixed points for cyclic (α,β)-admissible type F-contraction and F−weak contraction under the setting of modular spaces, where the modular is convex and satisfying the ∆2-condition. Later, we prove some periodic point results for self-mappings on a modular space. We also give some examples to s...

2015
Khaled Abd-Rabou

The purpose of this paper is to study common fixed point theorems for six (four single-valued and two set-valued) mappings in fuzzy metric space using general contractive condition of integral type, without assuming compatibility and continuity of any mapping on non complete metric spaces. To prove the theorems, we use a non compatible condition, that is, weak commutativity of type (Kh)in fuzzy...

2013
Saurabh Manro Brian Fisher

The aim of this work is to introduce the new property which is so called “common limit in the range” for four self-mappings and give some examples of mappings which satisfy this property. Moreover, we establish some new existence of a common fixed point theorem for generalized contractive mappings in fuzzy metric spaces by using new property and give some examples. Our results do not require th...

M. Akkouchi

In this paper, we introduce the concept of generalized -contractivityof a pair of maps w.r.t. another pair. We establish a common fixed point result fortwo pairs of self-mappings, when one of these pairs is generalized -contractionw.r.t. the other and study the well-posedness of their fixed point problem. Inparticular, our fixed point result extends the main result of a recent paper ofQingnian ...

1995
Geoffrey J. Goodhill Steven Finch Terrence J. Sejnowski

"Topographic" mappings occur frequently in the brain. A popular approach to understanding the structure of such mappings is to map points representing input features in a space of a few dimensions to points in a 2 dimensional space using some selforganizing algorithm. We argue that a more general approach may be useful, where similarities between features are not constrained to be geometric dis...

1995
Rob Payne

Recently, there has been a renewal of interest in self-timed systems, due to their modularity, robustness, low-power consumption and average-case performance. Additionally, this paper argues that there are speciic beneets to adopting self-timed design for FPGAs. The mapping problems of placement, routing and partitioning are simpliied by not having a global clock constraint to meet, so more map...

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