نتایج جستجو برای: common fixed point theorem

تعداد نتایج: 1426510  

Journal: :caspian journal of mathematical sciences 2013
m. alimohammady n. nyamoradi

in this work, byemploying the leggett-williams fixed point theorem, we study theexistence of at least three positive solutions of boundary valueproblems for system of third-order ordinary differential equationswith $(p_1,p_2,ldots,p_n)$-laplacianbegin{eqnarray*}left { begin{array}{ll} (phi_{p_i}(u_i''(t)))'  +  a_i(t) f_i(t,u_1(t), u_2(t), ldots, u_n(t)) =0 hspace{1cm} 0  leq t leq 1, alpha_i u...

Journal: :bulletin of the iranian mathematical society 0
n. a. secelean ‎‎department of mathematics and informatics faculty of sciences‎, ‎lucian blaga university of sibiu‎, ‎romania.

in this paper we define weak $f$-contractions on a‎ ‎metric space into itself by extending $f$-contractions‎ ‎introduced by d‎. ‎wardowski (2012) and provide some fixed point‎ ‎results in complete metric spaces and in partially ordered complete ‎generalized metric spaces‎. ‎some relationships between weak‎ ‎$f$-contractions and $fi$-contractions are highlighted‎. ‎we also ‎give some application...

Journal: :bulletin of the iranian mathematical society 0
f. wang depatment of mathematics‎, ‎college of science‎, ‎hohai university‎, ‎nanjing 210098‎, ‎china s. sun depatment of mathematics‎, ‎college of science‎, ‎hohai university‎, ‎nanjing 210098‎, ‎china

using the fixed point theorem in a‎ ‎cone‎, ‎the existence and multiplicity of radial convex solutions of‎ ‎singular system of monge-amp`{e}re equations are established‎.‎

Journal: :caspian journal of mathematical sciences 0
n. nyamoradi department of mathematics, faculty of sciences, razi university, 67149 kermanshah, iran.

in this work, by employing the krasnosel'skii fixed point theorem, we study the existence of positive solutions of a three-point boundary value problem for the following fourth-order differential equation begin{eqnarray*} left { begin{array}{ll} u^{(4)}(t) -f(t,u(t),u^{prime prime }(t))=0 hspace{1cm} 0 leq t leq 1, & u(0) = u(1)=0, hspace{1cm} alpha u^{prime prime }(0) - beta u^{prime prim...

2012
R. Umamaheshwar Rao V. Srinivas

The aim of this paper is to present a common fixed point theorem in a metric space which extends the result of P.C.Lohani & V.H.Bhadshah using the weaker conditions such as Reciprocally continuous, Compatible mappings, Weakly compatible and Associated sequence.

2010
Xianjiu Huang Chuanxi Zhu Xi Wen

In this paper, we prove a common fixed point theorem for a sequence of mappings in cone metric spaces. This result offers a generalization of Huang and Zhang’ theorem in [11]. An example to support our result is presented. Mathematics Subject Classification: 54E40; 54E35; 54H25

2009
YAQIONG LI FENG GU

In this paper, by virtue of some analysis techniques, we prove a new common fixed point theorem of Altman type for four mappings satisfying a contractive condition of integral type in complete metric spaces, which improves and extends several previous results obtained by others.

2014
Zoran Kadelburg Sunny Chauhan Mohammad Imdad

We prove a common fixed point theorem for a hybrid pair of occasionally coincidentally idempotent mappings via common limit range property. Our result improves some results from the existing literature, especially the ones contained in Sintunavarat and Kumam (2009). Some illustrative and interesting examples to highlight the realized improvements are also furnished.

2007
Shaban Sedghi Haiyun Zhou Thomas Bartsch

Recommended by Thomas Bartsch We give some new definitions of D *-metric spaces and we prove a common fixed point theorem for a class of mappings under the condition of weakly commuting mappings in complete D *-metric spaces. We get some improved versions of several fixed point theorems in complete D *-metric spaces.

2011
Jay G. Mehta M. L. Joshi Harish Chandra

We prove a unique common fixed-point theorem for two pair of weakly compatible maps in a complete metric space, which generalizes the result of Brian Fisher by a weaker condition such as weakly compatibility instead of compatibility and contractive modulus instead of continuity of maps.

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