Home › Researcher directory › Iz‐iddine EL‐Fassi
Iz‐iddine EL‐Fassi
Affiliation : Sidi Mohamed Ben Abdellah University
- 75Publications (affiliation in Morocco)
- 86Total publications
- 330Citations
- 11h-index
Research profile
Iz‐iddine EL‐Fassi has 75 indexed publications (2014–2026). Their work appears mainly in “Results in Mathematics”, “Journal of Mathematical Analysis and Applications” and “The Journal of Analysis”. Their most cited article, “Approximate solution of radical quartic functional equation related to additive mapping in 2-Banach spaces” (2017), has been cited 29 times. 22 of these publications date from the last three years of activity. Their work is co-authored with at least 8 researchers.
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Create my free profile Add my publicationsResearch areas
- Functional Equations Stability Results
- Nonlinear Differential Equations Analysis
- Fixed Point Theorems Analysis
- Mathematical Dynamics and Fractals
- Advanced Banach Space Theory
Publications (75)
- Hyers-ulam type stability of the Pexiderized Cauchy functional equation in locally convex cones
- On a new class of functional equations inspired by Abel’s functional equation
- The hyperstability of generalized biderivations on quasi-Banach algebras
- Orthogonality preserving maps and derivations on Banach ⋆-algebras
- On a Method of Proving the Hyperstability of a General Multi-linear Functional Equation
- The best Ulam constant of the n-th order linear differential operator with constant coefficients
- A cubic functional equation of the Euler–Lagrange type on restricted domains
- Hyers–Ulam stability via local functional inequalities in quasi-β-Banach spaces and some applications
- Approximation of 3D Cauchy–Jensen type operators in locally convex cones
- Some New Existence Results for Fractional Logisticdifferential Equation Via Ntd Method
- A study on Davison’s functional equation for set-valued functions
- On the solution of functional equations of Wilson's type on monoids
- Correction on: Approximation of 3D Cauchy–Jensen Type Operators in Locally Convex Cones
- Lipschitz stability estimates for a variant of the quadratic functional equation on monoids
- Estimates to the Stability of a Generalized Cauchy-Jensen Equation in Locally Convex Cones
- Corrigendum to “Stability of linear operators in locally convex cones” [Bull. Sci. Math. 191 (2024) 103380]
- Hyperstability of the generalized multi-Drygas equation in complete b-metric Abelian groups
- Stability of an Abel functional equation over restricted domains
- A new approach to approximate the solution of two general functional equations in quasi-Banach spaces
- Approximation of generalized derivation in quasi-Banach algebras
- A new representation for the solution of the Richards‐type fractional differential equation
- Correction: Approximation of generalized derivation in quasi-Banach algebras
- A New Hyperstability Result for the Multi-Drygas Equation Via the Brzdȩk’s Fixed Point Approach
- HYPERSTABILITY RESULTS FOR GENERALIZED QUADRATIC FUNCTIONAL EQUATIONS IN $(2,\alpha)$ -BANACH SPACES
- On a new class of two-variable functional equations on semigroups with involutions
- Approximate solution of a generalized multi-quadratic type functional equation in Lipschitz spaces
- A new fixed point theorem in quasi-(2,β)-Banach spaces and some of its applications to functional equations
- Stability of the Equation of q-Wright Affine Functions in Non-Archimedean (n,β)-Banach Spaces
- On approximate solutions of a class of Clairaut’s equations
- Extended stability problem for two fuzzy number-valued functional equations
- New characterizations of the set-valued solutions for a class of functional equations with involutions
- Set-valued solutions of a two-variable functional equation with involutions
- Generalized small-dimension lemma and d’Alembert type functional equation on compact groups
- A Fixed Point Approach to Stability of k-$$\text {th}$$ Radical Functional Equation in Non-Archimedean $$(n,\beta )$$-Banach Spaces
- On Set-Valued Solutions of a Generalized Bi-quadratic Functional Equation
- On selections of set-valued Euler-Lagrange inclusions with applications
- Approximate Solution of a p-th Root Functional Equation in Non-Archimedean (2,β)-Banach Spaces
- Linear maps preserving G-quasi-isometry operators
- On approximate solution of Drygas functional equation according to the Lipschitz criteria
- Measure zero stability problem of a generalized quadratic functional equation
- On Hyperstability of the Two-Variable Jensen Functional Equation on Restricted Domain
- Solution and approximation of radical quintic functional equation related to quintic mapping in quasi- $$\beta $$ β -Banach spaces
- On the general solution and hyperstability of the general radical quintic functional equation in quasi-β-Banach spaces
- New stability results for the radical sextic functional equation related to quadratic mappings in $$(2,\beta )$$ ( 2 , β ) -Banach spaces
- On approximation of approximately generalized quadratic functional equation via Lipschitz criteria
- ON THE HYPERSTABILITY OF A PEXIDERISED -QUADRATIC FUNCTIONAL EQUATION ON SEMIGROUPS
- Non-Archimedean hyperstability of Cauchy–Jensen functional equations on a restricted domain
- A new hyperstability result for the Apollonius equation on a restricted domain and some applications
- A fixed point approach to the hyperstability of the general linear equation in β-Banach spaces
- Stability and hyperstability of a quadratic functional equation and a characterization of inner product spaces
- Brzdęk’s fixed point method for the generalised hyperstability of bi-Jensen functional equation in (2,β)-Banach spaces
- Baire category theorem and approximation of the Pexider quadratic functional equation on a set of Lebesgue measure zero
- Approximate solution of radical quartic functional equation related to additive mapping in 2-Banach spaces
- On hyperstability of the biadditive functional equation
- On the generalized orthogonal stability of the pexiderized quadratic functional equations in modular spaces
- On a New Type of Hyperstability for Radical Cubic Functional Equation in Non-Archimedean Metric Spaces
- A new type of approximation for the radical quintic functional equation in non-Archimedean (2,β)-Banach spaces
- Erratum to: On a New Type of Hyperstability for Radical Cubic Functional Equation in Non-Archimedean Metric Spaces
- Lipschitz stability of the k-quadratic functional equation
- The solution of a class functional equations on semi-groups
- The solution of a generalized variant of d’Alembert’s functional equation
- An extension of a variant of d’Alemberts functional equation on compact groups
- On the solution of functional equations of Wilson's type on monoids
- Hyperstability of Cauchy–Jensen functional equations
- On Jensen’s and the quadratic functional equations with involutions
- On the generalized orthogonal stability of mixed type additive-cubic functional equations in modular spaces
- On Approximately of a $$\sigma -$$ σ - Quadratic Functional Equation on a Set of Measure Zero
- Hyperstability of an n-dimensional Jensen type functional equation
- On the superstability of generalized d’Alembert harmonic functions
- Stability of Pexiderized quadratic functional equation on a set of measure zero
- On the stability of α−Cauchy-Jensen type functional equation in Banach algebras
- On the hyperstability of a Cauchy-Jensen type functional equation in Banach spaces
- The hyperstability of AQ-Jensen functional equation on 2-divisible abelian group and inner product spaces
- Hyers-Ulam-Rassias of Orthogonal Pexiderized Quadratic Functional Equation
- A FIXED POINT APPROACH TO ORTHOGONAL STABILITY OF AN AQ-FUNCTIONAL EQUATIONS IN MODULAR SPACES
Publication venues
- Results in Mathematics × 6
- Journal of Mathematical Analysis and Applications × 5
- The Journal of Analysis × 4
- Rendiconti del Circolo Matematico di Palermo Series 2 × 4
- Bulletin des Sciences Mathématiques × 4
- Proyecciones (Antofagasta) × 4
Publications per year
- 20266
- 202510
- 20246
- 20233
- 20226
- 20212
- 20203
- 20195
- 201811
- 201711
Collaborations
Partner institutions : Université Ibn-Tofail · Université Ibn Zohr
Co-authors
- Samir Kabbaj
- Abdellatif Chahbi
- Lahcen Oukhtite
- Jawad Boutarfass
- Elhoucien Elqorachi
- B. Fadli
- Ahmed Charifi
- Abderrahman Hermas
Bibliographic data from OpenAlex (open database).
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