Results 51 to 60 of about 611,633 (304)

-Convergence Problems for Asymptotically Nonexpansive Mappings in CAT(0) Spaces

Abstract and Applied Analysis, 2013
New △-convergence theorems of iterative sequences for asymptotically nonexpansive mappings in CAT(0) spaces are obtained. Consider an asymptotically nonexpansive self-mapping of a closed convex subset of a CAT(0) space . Consider the iteration process ,
Luo Yi Shi, Ru Dong Chen, Yu Jing Wu
doaj   +1 more source

A modified proximal point algorithm in geodesic metric space

AIMS Mathematics, 2023
Proximal point algorithm is one of the most popular technique to find either zero of monotone operator or minimizer of a lower semi-continuous function.
Chanchal Garodia, Izhar Uddin , Bahaaeldin Abdalla, Thabet Abdeljawad   +3 more
doaj   +1 more source

Fixed point in CAT(0) spaces

Functiones et Approximatio Commentarii Mathematici, 2013
We obtained sufficient conditions for existence of fixed points of involutions in CAT(0) spaces. Convergence results of Mann and Ishikawa iterates of weakly contractive mappings are also proved.
Beg, Ismat, Abbas, Mujahid
openaire   +2 more sources

Fixed points for actions of Aut(Fn) on CAT(0) spaces [PDF]

, 2015
For n greater or equal 4 we discuss questions concerning global fixed points for isometric actions of Aut(Fn), the automorphism group of a free group of rank n, on complete CAT(0) spaces.
Varghese, Olga
core   +1 more source

5-Point CAT(0) Spaces after Tetsu Toyoda

Analysis and Geometry in Metric Spaces, 2021
We give another proof of Toyoda’s theorem that describes 5-point subspaces in CAT(0) length spaces.
Lebedeva Nina, Petrunin Anton
doaj   +1 more source

Limit groups are CAT(0) [PDF]

, 2005
We prove that every limit group acts geometrically on a CAT(0) space with the isolated flats property.Comment: The statement of Main theorem is improved, and the proof is changed accordingly.
Alibegovic, Emina, Bestvina, Mladen
core   +1 more source

Thin actions on CAT(0)-spaces

ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE
v2: Correction of minor errors in Step 3 of the proof of Theorem 3.1.
Nicola Cavallucci, Sambusetti
openaire   +2 more sources

Asymptotic topological regularity of CAT(0) spaces [PDF]

Annals of Global Analysis and Geometry, 2022
We study asymptotic topological regularity of CAT(0) spaces. We prove that if a purely n-dimensional, proper, geodesically complete CAT(0) space has small volume growth, then it is homeomorphic to the n-dimensional Euclidean space. We also discuss asymptotic geometry of proper, geodesically complete CAT(0) spaces of small volume growth.
openaire   +2 more sources

Circulating histones as clinical biomarkers in critically ill conditions

FEBS Letters, EarlyView.
Circulating histones are emerging as promising biomarkers in critical illness due to their diagnostic, prognostic, and therapeutic potential. Detection methods such as ELISA and mass spectrometry provide reliable approaches for quantifying histone levels in plasma samples.
José Luis García‐Gimenez, Juan Carlos Ruiz‐Rodríguez, Ricard Ferrer, Raquel Durá, Antonio Artigas, Iván Bajaña, David Bolado López de Andujar, Irene Cánovas‐Cervera, Adrián Ceccato, Luis Chiscano‐Camón, Elena Climent‐Martinez, Georgia García Fernández, Gemma Goma, Verónica Monforte, Beatriz Quevedo‐Sánchez, Adolf Ruiz‐Sanmartín, Antonio Sierra‐Rivera, Nieves Carbonell Monleón   +17 more
wiley   +1 more source

One step proximal point schemes for monotone vector field inclusion problems

AIMS Mathematics, 2022
In this paper, we propose one step convex combination of proximal point algorithms for countable collection of monotone vector fields in CAT(0) spaces.
Sani Salisu , Poom Kumam, Songpon Sriwongsa   +2 more
doaj   +1 more source