On Completeness and Fixed Point Theorems in Fuzzy Metric Spaces

Autor: Valentín Gregori, Juan-José Miñana, Bernardino Roig, Almanzor Sapena
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Mathematics, Vol 12, Iss 2, p 287 (2024)
Druh dokumentu: article
ISSN: 2227-7390
DOI: 10.3390/math12020287
Popis: This paper is devoted to showing the relevance of the notion of completeness used to establish a fixed point theorem in fuzzy metric spaces introduced by Kramosil and Michalek. Specifically, we show that demanding a stronger notion of completeness, called p-completeness, it is possible to relax some extra conditions on the space to obtain a fixed point theorem in this framework. To this end, we focus on a fixed point result, proved by Mihet for complete non-Archimedean fuzzy metric spaces (Theorem 1). So, we define a weaker concept than the non-Archimedean fuzzy metric, called t-strong, and we establish an alternative version of Miheţ’s theorem for p-complete t-strong fuzzy metrics (Theorem 2). In addition, an example of t-strong fuzzy metric spaces that are not non-Archimedean is provided.
Databáze: Directory of Open Access Journals
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