Results 71 to 80 of about 3,616,532 (270)

On some fixed point results in b-metric, rectangular and b-rectangular metric spaces

Arab Journal of Mathematical Sciences, 2016
In this paper we consider, discuss, improve and generalize recent fixed point results for mappings in b-metric, rectangular metric and b-rectangular metric spaces established by Đukić et al. (2011), George and Rajagopalan (2013) and Roshan et al. (2015).
Hui-Sheng Ding, Mohammad Imdad, Stojan Radenović, Jelena Vujaković   +3 more
doaj   +1 more source

Zero sets of Lie algebras of analytic vector fields on real and complex 2-manifolds

, 2015
Let X be an analytic vector field on a real or complex 2-manifold, and K a compact set of zeros of X whose fixed point index is not zero. Let A denote the Lie algebra of analytic vector fields Y on M such that at every point of M the values of X and [X,Y]
Hirsch, Morris W.
core  

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai, Yoshitaka Kurihara, Fumi Yamauchi, Hiromi Hosoya, Takeshi Saito   +4 more
wiley   +1 more source

On split common null point and common fixed point problems for multivalued demicontractive mappings

Demonstratio Mathematica
In this paper, we study a new inertial algorithm for finding a common solution of the split common null point problem for two infinite families of maximal monotone operators and common fixed point problem for an infinite family of multivalued ...
Wang Yaqin, Zhang Yuanqin
doaj   +1 more source

Commuting functions with no common fixed point [PDF]

Transactions of the American Mathematical Society, 1969
Introduction. Let f and g be continuous functions mapping the unit interval I into itself which commute under functional composition, that is, f(g(x))=g(f(V)) for all x in I. In 1954 Eldon Dyer asked whetherf and g must always have a common fixed point, meaning a point z in I for which f(z) =z=g(z). A. L.
openaire   +2 more sources

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada, Makoto Harada, Tadahiko Kikugawa, Takeshi Nakata, Koji Hashimoto, Tsuneo Konta, Yuji Kamijo   +6 more
wiley   +1 more source

The Existence of Cone Critical Point and Common Fixed Point with Applications

Journal of Applied Mathematics, 2011
We first establish some new critical point theorems for nonlinear dynamical systems in cone metric spaces or usual metric spaces, and then we present some applications to generalizations of Dancš-Hegedüs-Medvegyev's principle and the existence theorem ...
Wei-Shih Du
doaj   +1 more source

Some Remarks on Common Fixed Point Theorems

Journal of Mathematical Analysis and Applications, 1994
The author establishes several common fixed point theorems for compatible maps of a complete metric space using contractive conditions of Caristi type [\textit{J. Caristi}, Trans. Am. Math. Soc. 215, 241-251 (1976; Zbl 0305.47029)] and Hegedüs type [\textit{M. Hegedüs}, Acta Sci. Math. 42, 87-89 (1980; Zbl 0438.47057)].
openaire   +2 more sources

Common Fixed Points for Commuting Cournot Maps [PDF]

Real Analysis Exchange, 2003
The author studies the existence of common fixed points of two commuting Cournot maps on \([0,1]^2\). Extensions of results by \textit{J. R. Jachymski} [Proc. Am. Math. Soc. 124, 3229--3233 (1996; Zbl 0881.54043)] and \textit{G. F. Jungck} [Proc. Am. Math. Soc. 115, 495--499 (1992; Zbl 0771.54037)] to the Cournot case are given.
openaire   +3 more sources