Marin Borcut

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Shaun V Ault

Valdosta State University

iqbal jebril

Taibah University, Madinah, Saudi Arabia

Vadim Levit

Ariel University

Salah Mecheri

Taibah University, Madinah, Saudi Arabia

Xin-She Yang

University of Cambridge

Fabio Cuzzolin

Oxford Brookes University

Dr. J. M. Ashfaque (MInstP)

Independent Researcher

ANNIE SELDEN

New Mexico State University

Hallowed Olu

University of Lagos

Godwin A . Okeke

FEDERAL UNIVERSITY OF TECHNOLOGY, OWERRI, NIGERIA

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Papers by Marin Borcut

Tripled fixed point theorems for contractive type mappings in partially ordered metric spaces

Nonlinear Analysis: Theory, Methods & Applications, 2011

In this paper, we introduce the concept of tripled fixed point for nonlinear mappings in partiall... more In this paper, we introduce the concept of tripled fixed point for nonlinear mappings in partially ordered complete metric spaces and obtain existence, and existence and uniqueness theorems for contractive type mappings. Our results generalize and extend recent coupled fixed point theorems established by Gnana Bhaskar and Lakshmikantham [T. Gnana Bhaskar, V. Lakshmikantham, Fixed point theorems in partially ordered metric spaces and applications, Nonlinear Anal. 65 (7) (2006) 1379-1393]. Examples to support our new results are given.

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Tripled coincidence theorems for contractive type mappings in partially ordered metric spaces

Applied Mathematics and Computation, 2012

In this paper we introduce the concept of a tripled coincidence point for a pair of nonlinear con... more In this paper we introduce the concept of a tripled coincidence point for a pair of nonlinear contractive mappings F : X 3 ? X and g : X ? X. The obtained results extend recent coincidence theorems due to Ć irić and Lakshmikantham [V. Lakshmikantham, L. Ć irić , L., Coupled fixed point theorems for nonlinear contractions in partially ordered metric spaces, Nonlinear Anal. 70 (2009) 4341-4349].

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Triple fixed point theorems for mixed monotone Presic-Kannan and Presic-Chatterjea mappings in partially ordered metric spaces

Creative Mathematics and Informatics

The aim of this paper is to extend the Kannan fixed point theorem from single-valued self mapping... more The aim of this paper is to extend the Kannan fixed point theorem from single-valued self mappings T : X → X to mappings F : X3 → X satisfying a Presiˇ c-Kannan type contractive condition: ... or a Presiˇ c-Chatterjea type contractive condition: ... The obtained tripled fixed point theorems extend and unify several related results in literature.