Iz-iddine El-Fassi

activity

20202025

collaborators

3 papers

math.FA2025

Hyers-Ulam Type Stability of the Pexiderized Cauchy Functional Equation in Locally Convex Cones

Jafar Mohammadpour, Abbas Najati, Iz-iddine EL-Fassi

The foundation of locally convex cone theory relies on order-theoretic concepts that induce specific topological frameworks. Within this structure, cones naturally possess three di…

math.FA2021

A new type of functional equations on semigroups with involutions

Iz-iddine El-Fassi

Let $S$ be a commutative semigroup, $K$ a quadratically closed commutative field of characteristic different from $2$ , $G$ a $2$ -cancellative abelian group and $H$ an abelian group…

math.FA2020

A new fixed point approach to hyperstability of radical-type functional equations in quasi- $(2, β)$ -Banach spaces

Iz-iddine EL-Fassi

The main focus of this paper is to define the notion of quasi- $(2, β)$ -Banach space and show some properties in this new space, by help of it and under some natural assumptions, we…

Hyers-Ulam Type Stability of the Pexiderized Cauchy Functional Equation in Locally Convex Cones

A new type of functional equations on semigroups with involutions

A new fixed point approach to hyperstability of radical-type functional equations in quasi-(2,β)-Banach spaces

A new fixed point approach to hyperstability of radical-type functional equations in quasi- $(2, β)$ -Banach spaces