نتایج جستجو برای: Fixed fuzzy point

تعداد نتایج: 765369  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مراغه - دانشکده علوم پایه 1393

در این پایان نامه، متریک فازی یک تابع حقیقی مقدار نامنفی روی گردایه ای از تمام نقاط فازی یک مجموعه $x$ مورد مطالعه قرار گرفته و تعمیمی از فضای متری فازی ارائه می گردد. علاوه بر آن تحت مفروضات مشخص نتایج متناظر قضایای نقطه ثابت باناخ و کریکز مورد بررسی قرار می گیرد. این پایان نامه توسیعی از مقاله ذیل است: a. deb ray and p. k. saha. fixed point theorems on generalized fuzzy metric spaces, ha...

Journal: :iranian journal of fuzzy systems 2015
calogero vetro mujahid abbas basit ali

recently, phiangsungnoen et al. [j. inequal. appl. 2014:201 (2014)] studied fuzzy mappings in the framework of hausdorff fuzzy metric spaces.following this direction of research, we establish the existence of fixed fuzzy points of fuzzy mappings. an example is given to support the result proved herein; we also present a coincidence and common fuzzy point result. finally, as an application of ou...

Journal: :iranian journal of fuzzy systems 2014
dhananjay gopal calogero vetro

motivated by samet et al. [nonlinear anal., 75(4) (2012), 2154-2165], we introduce the notions of $alpha$-$phi$-fuzzy contractive mapping and $beta$-$psi$-fuzzy contractive mapping and prove two theorems which ensure the existence and uniqueness of a fixed point for these two types of mappings. the presented theorems extend, generalize and improve the corresponding results given in the literature.

Journal: :iranian journal of fuzzy systems 2015
s. m. vaezpour s. vaezzadeh

in this paper, a concept of generalized weakly contraction mappings in partially ordered fuzzy metric spaces is introduced and  coincidence point  theorems on partially ordered fuzzy metric spaces are proved. also, as the corollary of these theorems, some common fixed point theorems on partially ordered fuzzy metric spaces are presented.

Journal: :iranian journal of fuzzy systems 2015
s. sedghi n. shobkolaei i. altun

in the present paper, we give a new approach to caristi's fixed pointtheorem on non-archimedean fuzzy metric spaces. for this we define anordinary metric $d$ using the non-archimedean fuzzy metric $m$ on a nonemptyset $x$ and we establish some relationship between $(x,d)$ and $(x,m,ast )$%. hence, we prove our result by considering the original caristi's fixedpoint theorem.

Journal: :iranian journal of fuzzy systems 2015
li zhu chuanxi zhu xianjiu huang

in this paper, we study the existence of coupled coincidence andcoupled common fixed points for single-valued and fuzzy mappingsunder a contractive condition in metric space. presented theoremsextend and improve the main results of abbas and$acute{c}$iri$acute{c}$ {itshape et al.} [m. abbas, l.$acute{c}$iri$acute{c}$, {itshape et al.}, coupled coincidenceand common fixed point theorems for hybr...

Journal: :iranian journal of fuzzy systems 2015
m. abbas b. ali

generalized geraghty type fuzzy mappings oncomplete metric spaces are introduced and a fixed point theorem thatgeneralizes some recent comparable results for fuzzy mappings incontemporary literature is obtained. example is provided to show thevalidity of obtained results over comparable classical results for fuzzymappings in fixed point theory. as an application, existence of coincidencefuzzy p...

Journal: :iranian journal of fuzzy systems 2013
luis a. ricarte salvador romaguera

we obtain two fixed point theorems for a kind of $varphi $-contractions incomplete fuzzy metric spaces, which are applied to easily deduceintuitionistic versions that improve and simplify the recent results of x.huang, c. zhu and x. wen.

Journal: :iranian journal of fuzzy systems 2014
satish shukla mujahid abbas

in this paper,  the concept of fuzzy metric-like spaces is introduced which generalizes  the notion of fuzzy metric spaces given by george and veeramani cite{vee1}. some fixed point results for fuzzy contractive mappings on fuzzy metric-like spaces are derived. these results generalize several comparable results from the current literature. we also provide illustrative examples in support of ou...

Journal: :iranian journal of fuzzy systems 2006
mohd. rafi segi rahmat mohd. salmi md. noorani

in this paper, we introduce intuitionistic fuzzy contraction mappingand prove a fixed point theorem in intuitionistic fuzzy metric spaces.

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