Results 111 to 120 of about 2,978 (161)
A simple case within Nash-Moser-Ekeland theory
, 2018 We present simple and direct proof to an important case of Nash-Moser-Ekeland theorem.Comment: In this third version we have made numerous improvements inspired by the referee, like correcting the definition of directional derivative to the standard ...
Ivanov, Milen, Zlateva, Nadia
core
Remarks on some coupled fixed point theorems in G-metric spaces
, 2013 In this paper, we show that, unexpectedly, most of the coupled fixed point theorems in the context of (ordered) G-metric spaces are in fact immediate consequences of usual fixed point theorems that are either well known in the literature or can be ...
R. Agarwal, E. Karapınar
semanticscholar +1 more source
Common fixed points of mappings satisfying implicit contractive conditions
Fixed Point Theory and Applications, 2012 In this article we obtain, in the setting of metric spaces or ordered metric spaces, coincidence point, and common fixed point theorems for self-mappings in a general class of contractions defined by an implicit relation.
V. Berinde, F. Vetro
semanticscholar +1 more source
Fixed Point Theory and Applications, 2011 In this paper, we prove a fixed point theorem for generalized weak contractions satisfying rational expressions in partially ordered metric spaces. The result is a generalization of a recent result of Harjani et al. (Abstr. Appl.
Luong Nguyen Van, Thuan Nguyen
doaj
An analysis on the approximate controllability of neutral impulsive stochastic integrodifferential inclusions via resolvent operators. [PDF]
Heliyon, 2023 Ma YK +4 more
europepmc +1 more source
Nonlinear coupled fixed point theorems in ordered generalized metric spaces with integral type
, 2012 In this article, we study coupled coincidence and coupled common fixed point theorems in ordered generalized metric spaces for nonlinear contraction condition related to a pair of altering distance functions.
Y. Cho +4 more
semanticscholar +1 more source
Fixed point results of weakly contraction mappings in partially ordered b-metric spaces. [PDF]
BMC Res Notes, 2022 Kalyani K, Seshagiri Rao N.
europepmc +1 more source
, 2013 In this paper, tripled coincidence points of mappings satisfying some nonlinear contractive conditions in the framework of partially ordered b-metric spaces are obtained. Our results extend the results of Berinde and Borcut (Nonlinear Anal. 74:4889-4897,
Vahid Parvaneh +2 more
semanticscholar +1 more source
An admissible Hybrid contraction with an Ulam type stability
Demonstratio Mathematica, 2019 In this manuscript, we introduce a new hybrid contraction that unify several nonlinear and linear contractions in the set-up of a complete metric space. We present an example to indicate the genuine of the proved result.
Karapınar Erdal, Fulga Andreea
doaj +1 more source
Variations of generalized weak contractions in partially ordered b-metric space. [PDF]
BMC Res Notes, 2022 Rao NS, Kalyani K.
europepmc +1 more source