scholarly journals Fixed points of discontinuous mappings in uniformly convex metric spaces

2018 ◽  
Vol 19 (1) ◽  
pp. 397-406
Author(s):  
Sami Atif Shukri ◽  
◽  
Vasile Berinde ◽  
Abdul Rahim Khan ◽  
◽  
...  
Author(s):  
A. Kaewcharoen ◽  
B. Panyanak

The purpose of this paper is to ensure the existence of fixed points for multivalued nonexpansive weakly inward nonself-mappings in uniformly convex metric spaces. This extends a result of Lim (1980) in Banach spaces. All results of Dhompongsa et al. (2005) and Chaoha and Phon-on (2006) are also extended.


2010 ◽  
Vol 2010 (1) ◽  
pp. 385986 ◽  
Author(s):  
AbdulRahim Khan ◽  
Hafiz Fukhar-ud-din ◽  
AbdulAziz Domlo

2009 ◽  
Vol 02 (02) ◽  
pp. 171-182 ◽  
Author(s):  
Izmat Beg ◽  
Adnan Jahangir ◽  
Akbar Azam

Some new theorems on random coincidence points and random fixed points for weakly compatible mappings in convex separable complete metric spaces have been established. These results generalize some recent well known comparable results in the literature.


2021 ◽  
Vol 37 (3) ◽  
pp. 513-527
Author(s):  
JENJIRA PUIWONG ◽  
◽  
SATIT SAEJUNG ◽  
◽  

We prove ∆-convergence and strong convergence theorems of an iterative sequence generated by the Ishikawa’s method to a fixed point of a single-valued quasi-nonexpansive mappings in p-uniformly convex metric spaces without assuming the metric convexity assumption. As a consequence of our single-valued version, we obtain a result for multi-valued mappings by showing that every multi-valued quasi-nonexpansive mapping taking compact values admits a quasi-nonexpansive selection whose fixed-point set of the selection is equal to the strict fixed-point set of the multi-valued mapping. In particular, we immediately obtain all of the convergence theorems of Laokul and Panyanak [Laokul, T.; Panyanak, B. A generalization of the (CN) inequality and its applications. Carpathian J. Math. 36 (2020), no. 1, 81–90] and we show that some of their assumptions are superfluous.


2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Maryam A. Alghamdi ◽  
Vasile Berinde ◽  
Naseer Shahzad

We consider multivalued nonself-weak contractions on convex metric spaces and establish the existence of a fixed point of such mappings. Presented theorem generalizes results of M. Berinde and V. Berinde (2007), Assad and Kirk (1972), and many others existing in the literature.


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