M. Abtahi

activity

20122025

most citedFixed point theorems for Meir-Keeler type contractions in metric spaces

8 citations · 24 across the 13 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.FA2015

Vector-valued spectra of Banach algebra valued continuous functions

Mortaza Abtahi, Sara Farhangi

Given a compact space $X$ , a commutative Banach algebra $A$ , and an $A$ -valued function algebra $A$ on $X$ , the notions of vector-valued spectrum of functions $f\in\maths…

math.FA2015★ 8 cited

Vector-valued characters on Vector-valued Function Algebras

Mortaza Abtahi

Let $A$ be a commutative Banach algebra and $X$ be a compact space. The class of Banach $A$ -valued function algebras on $X$ consists of subalgebras of $C (X, A)$ with certain propert…

math.GN2015★ 1 cited

Fixed point theorems of Ciric-Matkowski type in generalized metric spaces

Mortaza Abtahi

A self-map $T$ of a $ν$ -generalized metric space $(X, d)$ is said to be a Ciric-Matkowski contraction if $d (T x, T y) < d (x, y)$ , for $x \neq = y$ , and, for every $ε > 0$ , there is $δ > 0$ suc…