Results 71 to 80 of about 8,426 (194)

Fixed point results for contractions of polynomial type

Demonstratio Mathematica
We introduce two new classes of single-valued contractions of polynomial type defined on a metric space. For the first one, called the class of polynomial contractions, we establish two fixed point theorems.
Jleli Mohamed, Păcurar Cristina Maria, Samet Bessem   +2 more
doaj   +1 more source

On Multi-Valued Nonlinear Quasi-Contractions [PDF]

, 2009
In this paper we give new fixed point theorem for multi-valued nonlinear quasi -contractions which generalizes results presented in Arand -elovic, Rajovic Mathematics Subject Classification: 54H25 ...
Ivan D Arand -Elović, Slavko N D -Urić
core  

Existence of fixed points of large MR-Kannan contractions in Banach Spaces

Applied General Topology
The purpose of this paper is to introduce the class of large MR-Kannan contractions on Banach space that contains the classes of Kannan, enriched Kannan, large Kannan, MR-Kannan contractions and some other classes of nonlinear operators.
Rizwan Anjum, Mujahid Abbas, Muhammad Waqar Akram, Stojan Radenović   +3 more
doaj   +1 more source

Fuzzy contractions of Suzuki type and a characterization of fuzzy metric completeness

, 2022
[EN] In this note we introduce a class of fuzzy contractions of Suzuki type from which a fixed point theorem is proved. As a product of our approach, a characterization of a large class of complete fuzzy metric spaces is obtained.Romaguera Bonilla, S ...
Romaguera Bonilla, Salvador
core  

Fundamental contractions in suprametric spaces: Analysis and applications

In this manuscript, we propose the notion of a strong extended s-suprametric space, a novel extension that outperforms both s-suprametric and extended suprametric spaces. It looks into the aspects of open and closed ball topologies within this structure.
Ahmad, Haroon, Öztürk, Mahpeyker, Aldosari, Saad Jamhan, Asmat, Farwa, Younis, Mudasir   +4 more
core   +1 more source

Parameter estimation in nonlinear AR–GARCH models [PDF]

This paper develops an asymptotic estimation theory for nonlinear autoregressive models with conditionally heteroskedastic errors. We consider a general nonlinear autoregression of order p (AR(p)) with the conditional variance specified as a general ...
Mika Meitz, Pentti Saikkonen
core  

Tripled Fixed Point Results in Generalized Metric Spaces

Journal of Applied Mathematics, 2012
We establish a tripled fixed point result for a mixed monotone mapping satisfying nonlinear contractions in ordered generalized metric spaces. Also, some examples are given to support our result.
Hassen Aydi, Erdal Karapınar, Wasfi Shatanawi   +2 more
doaj   +1 more source

Fixed Point Results for Large Closed Four-Step Orbital Contractions in Metric Spaces

Mathematics
This paper introduces a higher-order orbital framework in fixed point theory based on a closed four-step orbital functional. Existing approaches, such as triangle-perimeter contractions, mainly rely on three-point configurations and first-order geometric
Nawal Alharbi
doaj   +1 more source

A contractive approach in generalized suprametric spaces with applications to fractional boundary value and epidemiological problems

Results in Physics
This manuscript analyzes Reich, Ćirić, and Banach contractions in complete extended suprametric spaces by using the Fw-class of functions. We establish new fixed point theorems for these Fw−contractions, extending classical results in a generalized ...
Haroon Ahmad, Aqsa Riaz, Mohammad Akram, Umar Ishtiaq, Ioan-Lucian Popa   +4 more
doaj   +1 more source

On nonlinear contractions [PDF]

Proceedings of the American Mathematical Society, 1969
Boyd, D. W., Wong, J. S. W.
openaire   +1 more source