Results 31 to 40 of about 354,099 (256)

Discussion on some coupled fixed point theorems [PDF]

open access: yesFixed Point Theory and Applications, 2013
The authors survey a possible list of coupled fixed point results in ordered metric spaces which, by a method used presumably for the first time in [\textit{V. Berinde}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 18, 7347--7355 (2011; Zbl 1235.54024)], can be reduced to known results for mappings with one variable.
Samet, Bessem   +3 more
openaire   +1 more source

On Coupled Fixed Point Theorems for Nonlinear Contractions in Partially Ordered -Metric Spaces

open access: yesAbstract and Applied Analysis, 2012
Two concepts—one of the coupled fixed point and the other of the generalized metric space—play a very active role in recent research on the fixed point theory.
S. A. Mohiuddine, Abdullah Alotaibi
doaj   +1 more source

Some Rational Coupled Fuzzy Cone Contraction Theorems in Fuzzy Cone Metric Spaces with an Application

open access: yesJournal of Mathematics, 2021
In this paper, we establish the new concept of rational coupled fuzzy cone contraction mapping in fuzzy cone metric spaces and prove some unique rational-type coupled fixed-point theorems in the framework of fuzzy cone metric spaces by using “the ...
Saif Ur Rehman   +4 more
doaj   +1 more source

Coupled Fixed-Point Theorems in Theta-Cone-Metric Spaces

open access: yesJournal of Mathematics, 2021
This paper gives further generalizations of some well-known coupled fixed-point theorems. Specifically, Theorem 3 of the paper is the generalization of the Baskar–Lackshmikantham coupled fixed-point theorem, and Theorem 5 is the generalization of the ...
Sahar Mohamed Ali Abou Bakr
doaj   +1 more source

Coupled Potts models: Self-duality and fixed point structure [PDF]

open access: yesNuclear Physics B, 1999
70 pages; 17 tables and 15 figures in text.
Dotsenko, Vladimir   +3 more
openaire   +2 more sources

New Existence Results and Generalizations for Coincidence Points and Fixed Points without Global Completeness

open access: yesAbstract and Applied Analysis, 2013
Some new existence theorems concerning approximate coincidence point property and approximate fixed point property for nonlinear maps in metric spaces without global completeness are established in this paper.
Wei-Shih Du
doaj   +1 more source

Fixed point results of weakly contraction mappings in partially ordered b-metric spaces

open access: yesBMC Research Notes, 2022
Objectives We explored the results of fixed point, coincidence point and coupled coincidence point for the mappings in an ordered metric spaces. Our results generalized and extended the well-known results in the literature.
K. Kalyani, N. Seshagiri Rao
doaj   +1 more source

Intraoperative Collection of Ascitic Fluid With Intra‐ or Postoperative Reinfusion in Ovarian Cancer: Safety and Feasibility of a Roller Pumping Method

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients with ovarian cancer often present with massive ascites, leading to significant protein loss during surgical procedures. Although cell‐free concentrated ascites reinfusion therapy (CART) is used in palliative settings to mitigate protein loss, its application in intraoperative settings remains unexplored.
Yutaka Yoneoka   +7 more
wiley   +1 more source

On Some Coupled Quasi-fixed Points Theorems

open access: yesJournal of Mathematical Analysis and Applications, 1996
The author discusses existence of fixed points and coupled quasi-fixed points of mixed monotone operators. Some special cases from [\textit{D. Guo} and \textit{V. Lakshmikantham}, Nonlinear problems in abstract cones, San Diego (1988; Zbl 0661.47045)] are also discussed.
openaire   +2 more sources

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa   +3 more
wiley   +1 more source

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