Results 51 to 60 of about 717,911 (193)

Exponential entropy on intuitionistic fuzzy sets [PDF]

, 2013
summary:In the present paper, based on the concept of fuzzy entropy, an exponential intuitionistic fuzzy entropy measure is proposed in the setting of Atanassov's intuitionistic fuzzy set theory. This measure is a generalized version of exponential fuzzy
Verma, Rajkumar, Sharma, Bhu Dev
core   +1 more source

Edelstein Fixed Point Theorem in Neutrosophic Metric Spaces With an Application to an SIR‐Type Epidemic Model

International Journal of Differential Equations, Volume 2026, Issue 1, 2026.
In this paper, utilizing the concept of neutrosophic metric spaces proposed by Kirisci and Simsek, we establish a fixed point theorem of Edelstein type within this framework. A numerical example is provided to illustrate the validity of the main result. Furthermore, we present an application to a general SIR‐type epidemic model.
Vishal Gupta, Nitika Garg, Rahul Shukla, Md. Kamrujjaman   +3 more
wiley   +1 more source

New Fixed‐Point and Common Fixed‐Point Results in Finite‐Dimensional Normed Pre‐A∗ Vector Spaces

International Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
This paper establishes new fixed‐point and common fixed‐point theorems for continuous and asymptotically regular self‐maps defined on finite‐dimensional normed pre‐A∗ vector spaces over σ‐complete pre‐A∗‐algebras. We prove that every continuous and asymptotically regular self‐map on such a space has at least one fixed point (Theorem 2).
Kidanemariam Birhane Gebremedhin, Jonnalagadda Venkateswara Rao, Gebreslassie Tesfay Berhe, Shikha Binwal   +3 more
wiley   +1 more source

Properties of Supra Equivalent Subsets and Their Applications via Supra R0 Spaces

Journal of Mathematics, Volume 2026, Issue 1, 2026.
The extension of a topology by weakening its axioms is highly significant, as it generates new frameworks that preserve certain topological properties while allowing for the modeling of several practical problems. In this paper, we introduce the concept of supra equivalent subsets in the framework of a supra topological space and look at the main ...
Tareq M. Al-Shami, A. A. Azzam, Smritijit Sen   +2 more
wiley   +1 more source

System of Intuitionistic Fuzzy Differential Equations With Intuitionistic Fuzzy Initial Values

, 2018
In this paper, we have studied the system of differential equations with intuitionistic fuzzy initial values under the interpretation of (i,ii)-GH differentiability concepts and Zadeh's extension principle interpretation. And we have given some numerical
Akın, Ömer, Bayeğ, Selami
core   +1 more source

On Fermatean Neutrosophic e-continuous and e-irresolute Maps [PDF]

Neutrosophic Sets and Systems
The primary objective of this paper is to introduce and develop the concept of Fermatean neutrosophic e-continuous maps in the framework of Fermatean neutrosophic topological spaces.
A. Vadivel, P. Thamilarasi, S. Priya
doaj   +1 more source

Contraction‐Type Fixed‐Point Theorem for Bivariate/Multivariate Self‐Mappings in Fuzzy Banach Spaces and Hyers–Ulam Stability of Multivariate Functional Equations

Journal of Mathematics, Volume 2026, Issue 1, 2026.
To address the lack of dedicated tools for analyzing the stability of bivariate functional equations in fuzzy environments, this paper investigates fixed‐point theory and functional equation stability in fuzzy Banach spaces (FBSs). First, building on the Bag–Samanta fuzzy norm, we supplement and prove the “proposition on convergence preservation of ...
Gang Lyu, Yang Liu, Yuanfeng Jin, Choonkil Park, Erhan Güler   +4 more
wiley   +1 more source

A Novel Intuitionistic Fuzzy Inhibitor Arc Petri Net With Error Back Propagation Algorithm and Application in Fault Diagnosis

IEEE Access, 2019
The setting and adjustment of the weight parameters in the traditional fault diagnosis method depend entirely on personal experience, and the parameter setting lacks regularity.
Mingyue Tan, Jiming Li, Guangyuan Xu, Xuezhen Cheng   +3 more
doaj   +1 more source

Delving Into the Depths of the Properties and Behavior of Bipolar Pythagorean Neutrosophic Metric Spaces: A Theoretical Analysis

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This paper advances the theory of bipolar Pythagorean neutrosophic fuzzy (BPNF) sets by establishing their formalization within a topological and metric framework, while also demonstrating their role in decision‐making under uncertainty. The main contributions are as follows: (1) definition and characterization of BPNF topological spaces, providing a ...
Akiladevi Natarajan, Santhi Rathinasamy, Prasantha Bharathi Dhandapani, Md. Fayz-Al-Asad, Samy R. Mahmoud, Tareq Al-Shami   +5 more
wiley   +1 more source

A New Fixed‐Point Framework for Nonexpansive and Averaged Mappings in Normed GE‐Algebras

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we develop a systematic framework for studying fixed‐point theory in the setting of normed GE‐algebras. Building on the GE‐norm, we introduce and analyze nonexpansive mappings, α‐averaged mappings, and enriched contractions with respect to the quasimetric induced by the GE‐norm.
Prashant Patel, Ravikumar Bandaru, Amal S. Alali, Erhan Güler   +3 more
wiley   +1 more source