نتایج جستجو برای: common xed points

تعداد نتایج: 930174  

Journal: :نظریه تقریب و کاربرد های آن 0
لیلا قلی زاده دانشگاه آزاد واحد علوم و تحقیقات تهران

we consider the concept of ω-distance on a complete partially ordered g-metric space and prove some common fi xed point theorems.

Journal: :نظریه تقریب و کاربرد های آن 0
m. salehi department of mathematics, islamic azad university, savadkooh branch, savadkooh, iran. v. dadashi department of mathematics, islamic azad university, sari branch, sari, iran. m. roohi department of mathematics, faculty of basic sciences, university of mazandaran, babolsar, iran.

some algorithms for nding common xed point of a family of mappings isconstructed. indeed, let c be a nonempty closed convex subset of a uniformlyconvex banach space x whose norm is gateaux di erentiable and let {tn} bea family of self-mappings on c such that the set of all common fixed pointsof {tn} is nonempty. we construct a sequence {xn} generated by the hybridmethod and also we give the ...

1997
Michael van Hartskamp

We present two examples of nice normal spaces X having the property that for some xed-point free homeomorphism on X its Cech-Stone extension has a xed point. One of the spaces presented here is locally countable, locally compact, separable , normal, countably paracompact and weakly zero-dimensional. The other one is hereditarily normal and strongly zero-dimensional. Our construction of this exa...

2000
Henri Epstein

We prove the existence of xed points of p-tupling renormalization operators for interval and circle mappings having a critical point of arbitrary real degree r > 1. Some properties of the resulting maps are studied: analyticity, univalence, behavior as r tends to innnity.

Journal: :Electr. Notes Theor. Comput. Sci. 2001
Keye Martin

We unveil new results based on measurement that guarantee the existence of unique xed points which need not be maximal. In addition, we establish that least xed points are always attractors in the topology, and then explore the consequences of these ndings in analysis. In particular, an extension of the Banach xed point theorem on compact metric spaces 3] is obtained.

Journal: :نظریه تقریب و کاربرد های آن 0
e. firouz department of mathematics, islamic azad university, abhar branch, abhar, iran. s. j. hosseini ghoncheh department of mathematics, takestan branch, islamic azad university, takestan, iran.

boujari [5] proved a fi xed point theorem with an old version of the integraltype contraction , his proof is incorrect. in this paper, a new generalizationof integral type contraction is introduced. moreover, a fixed point theorem isobtained.

2007
Dietmar Salamon

Symplectic Geometry has seen a rapid development since the 80's with the discovery of rigidity phenomena like the non-squeezing theorem based on Gromov's seminal theory of pseudo-holomorphic curves. A directly related development was Floer's method of using Morse theory in a new way, known as Floer homology, in order to solve the Arnold conjecture. In the 60's Arnold formulated his conjecture b...

The purpose of this paper is to study the convergence and the almost sure T-stability of the modied SP-type random iterative algorithm in a separable Banach spaces. The Bochner in-tegrability of andom xed points of this kind of random operators, the convergence and the almost sure T-stability for this kind of generalized asymptotically quasi-nonexpansive random mappings are obtained. Our result...

1989
Andrew McLennan

We present a treatment for mathematical economists of three topics in the theory of xed points: (a) the Lefschetz xed point index; (b) the Lefschetz xed point theorem; (c) the theory of essential sets of xed points. Our treatment is geometric, based on elementary techniques, and largely selfcontained. In particular there is no essential reference to algebraic topology. Within the chosen scope o...

2008
S. HIGUCHI

We report on our recent studies of the large N renormalization group (RG) method which clariies phase structure of random matrix models. We derive an exact RG equation which enables us to obtain the exact locations of xed points and their scaling exponents. The classiication of phases is given by this analysis. A linear approximation visualizes the RG ow of crossover phenomena including several...

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