Results 81 to 90 of about 578,070 (245)

Tripled fixed point and tripled coincidence point theorems in intuitionistic fuzzy normed spaces

, 2012
The aim of this paper is to prove the existence of tripled fixed point and tripled coincidence point theorems in intuitionistic fuzzy normed spaces (IFNS).
M. Abbas, Basit Ali, W. Sintunavarat, Poom Kumam   +3 more
semanticscholar   +1 more source

$FG$-coupled fixed point theorems in cone metric spaces

Karpatsʹkì Matematičnì Publìkacìï, 2018
The concept of $FG$- coupled fixed point introduced recently is a generalization of coupled fixed point introduced by Guo and Lakshmikantham. A point $(x,y)\in X\times X$ is said to be a coupled fixed point of the mapping $F: X\times X \rightarrow X$ if $
E. Prajisha, P. Shaini
doaj   +1 more source

Some fixed point theorems concerning F-contraction in complete metric spaces

, 2014
In this paper, we extend the result of Wardowski (Fixed Point Theory Appl. 2012:94, 2012) by applying some weaker conditions on the self map of a complete metric space and on the mapping F, concerning the contractions defined by Wardowski.
H. Piri, Poom Kumam
semanticscholar   +1 more source

Duality Fixed Point and Zero Point Theorems and Applications

Abstract and Applied Analysis, 2012
The following main results have been given. (1) Let E be a p-uniformly convex Banach space and let T:E→E* be a (p-1)-L-Lipschitz mapping with condition ...
Qingqing Cheng, Yongfu Su, Jingling Zhang   +2 more
doaj   +1 more source

Fixed-Point Theorems for Fuzzy Mappings

Mathematics
Since the 1970s and 1980s, significant contributions have been made by Weiss, Butnariu, Heilpern, Chitra, Subrahmanyam, and others, extending fixed-point theorems to fuzzy mappings and topological spaces.
Allan Edley Ramos de Andrade, Vinícius Francisco Wasques   +1 more
doaj   +1 more source

A fixed point theorem for distributions

Stochastic Processes and their Applications, 1992
The author studies, in a systematic form, the contractive behavior of the map \(S\) of distributions to distributions \(S(F)\overset{\mathcal D}=\sum_ i T_ i X_ i+C\), \((C,T=(T_ 1,T_ 2,\dots))\), \(X_ i\) are independent random variables with distribution function \(F\). Further the author obtains the higher and exponential moments of the fixed point.
openaire   +2 more sources

A fixed-point theorem for trees [PDF]

Bulletin of the American Mathematical Society, 1941
Not ...
openaire   +3 more sources

Fixed Point Theory of Weak Contractions in Partially Ordered Metric Spaces

Journal of Applied Mathematics, 2013
We prove two new fixed point theorems in the framework of partially ordered metric spaces. Our results generalize and improve many recent fixed point theorems in the literature.
Chi-Ming Chen, Jin-Chirng Lee, Chao-Hung Chen   +2 more
doaj   +1 more source

Some new fixed point theorems for α-Geraghty contraction type maps in metric spaces

, 2014
We generalize the results obtained in Cho et al. (Fixed Point Theory Appl. 2013:329, 2013) and give other conditions to prove the existence and uniqueness of a fixed point of α-Geraghty contraction type maps in the context of a complete metric space.
O. Popescu
semanticscholar   +1 more source

On a fixed point theorem of Pathak [PDF]

International Journal of Mathematics and Mathematical Sciences, 1991
It is shown that the continuity of the mapping in Pathak′s fixed point theorem for normed spaces is not necessary.
openaire   +3 more sources