الرئيسية › دليل الباحثين › Aymen Ammar
Aymen Ammar
الانتماء : University of Sfax · Faculty of Sciences of Sfax
- 96منشورات (انتماء تونسي)
- 116مجموع المنشورات
- 680الاستشهادات
- 15مؤشر h
الملف البحثي
لدى Aymen Ammar 96 منشور(ات) مفهرسة (2013–2026). تُنشر أعماله أساسًا في «Filomat»، «Rendiconti del Circolo Matematico di Palermo Series 2» و«Mediterranean Journal of Mathematics». أكثر مقالاته استشهادًا هو «On the essential spectra of some matrix of linear relations» (2013)، وقد استُشهد به 61 مرة. 18 من هذه المنشورات تعود إلى آخر ثلاث سنوات من النشاط. شارك في تأليف أعماله 12 باحثًا على الأقل، منهم باحثون من مؤسسات في السعودية.
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إنشاء ملفي المجاني إضافة منشوراتيمجالات البحث
- Advanced Banach Space Theory
- Holomorphic and Operator Theory
- Spectral Theory in Mathematical Physics
- Matrix Theory and Algorithms
- advanced mathematical theories
المنشورات (96)
- S Spectral Theory of Multivalued Linear Operator in Banach Spaces
- Jacobson’s lemma for the Jeribi essential spectrum
- Discrete spectrum and polaroid linear relations
- A general fredholm theory and normal operational quantity
- Pseudospectra and Numerical Range of Linear Relations
- Introduction
- Spectra and Local Spectral Theory for Block Multivalued Operator Matrices
- Frobenius–Schur Factorization and Essential Spectra of Block Multivalued Operator Matrices
- Algebraic and Topological Properties of Block Multivalued Operator Matrices
- Some notable results on approximate pseudospectrum
- Some results of n × n block matrices of linear relations in Banach spaces
- Self-adjoint block multivalued linear operator matrix and application
- A Note on the Mapping Theorem for Essential Pseudospectra in a Banach Space
- A note on the mapping theorem of essential pseudospectra on a Banach space
- Demicompact linear operator. Essential pseudospectra and perturbation
- NEW RESULTS OF ESSENTIAL APPROXIMATE AND DEFECT POINT SPECTRUM BY USING THE GAP CONVERGENCE
- Kachurovskij spectra nonlinear block operator matrices
- Two-parameters semigroups for linear evolution equations
- Characterization of the essential approximation S-spectrum and the essential defect S-spectrum in a right quaternionic Hilbert space
- Some properties of the condition pseudospectrum of multivalued linear operators
- New results on perturbations of p-adic linear operators
- Some results concerning the linear relations which are adjoint to each other
- Fredholm linear relation and some results of demicompact for multivalued matrix linear operator
- Extended eigenvalues of 2 × 2 block operator matrices
- A characterization of S-pseudospectra of linear operators in a Hilbert space
- Some results of fredholm perturbations of multivalued linear operator in normed spaces
- Some properties of extended eigenvalues for operators pair
- Correction to: Some results of essential spectra of sum of two bounded linear operators in non-Archimedean Banach space
- Some results of essential spectra of sum of two bounded linear operators in non-Archimedean Banach space
- Demicompact Linear Relations
- The pseudospectra of linear operator pencils in a Hilbert space
- Relative boundedness in non-Archimedean Banach spaces
- The condition $$\varepsilon$$-pseudospectra on non-Archimedean Banach space
- Demicompactness, selection of linear relation and application to multivalued matrix
- Aiena’s local spectral theory for a block matrix linear relations through localized SVEP
- The index of a linear relation under strictly singular perturbations
- A new decomposition for multivalued 3 × 3 matrices
- Fredholm theory for demicompact linear relations
- Essential spectra in non-Archimedean fields
- Demicompactness Results and Frobenuis Schur’s Decomposition for Block Operator Matrices in Right Quaternionic Hilbert Spaces
- A new spectral approach in the matrix algebra: trace pseudospectrum
- On the left (right) condition pseudospectrum of linear operators
- Extended eigenvalues of a closed linear operator
- A formula for gap between $$\mathbb {K}$$-relatively bounded operator matrices in non-Archimedean Banach spaces
- The Local Spectral Theory for Linear Relations Involving SVEP
- Some decomposition for multivalued matrix pencils linear operator
- Essential S-Spectrum for Quaternionic Quasi-Compact Operators on Right Quaternionic Hilbert Spaces
- A Characterization of the Essential Spectra of $$2\times 2$$ Block Matrices of Linear Relations
- A New Spectral Approach in the Matrix Algebra: C-Determinant Pseudospectrum
- The local spectral theory for upper triangular matrix linear relations involving SVEP
- The condition pseudospectrum of a operator pencil
- PseudoS-spectrum in a right quaternionic Hilbert space
- Sequence of Multivalued Linear Operators Converging in the Generalized Sense
- Demicompact operators and ellipsoid spectra on quaternionic Hilbert spaces
- Some description of essential structured approximate and defect pseudospectrum
- Some approximation results in a non-Archimedean Banach space
- The pseudospectrum of a 2×2 block matrices of sequences of linear operators converging in the generalized sens
- On some classes of demicompact linear relation and some results of essential pseudospectra
- Pseudospectra in a non-Archimedean Banach space and essential pseudospectra in Eω
- The $$\varepsilon $$-pseudospectra and the essential $$\varepsilon $$-pseudospectra of linear relations
- Browder essential approximate pseudospectrum and defect pseudospectrum on a Banach space
- Generalized trace pseudo-spectrum of matrix pencils
- Sequence of Linear Operators in Non-Archimedean Banach Spaces
- A characterization of S-condition pseudospectrum of multivalued linear operators
- The condition pseudospectrum subset and related results
- The Essential Pseudo-Spectra of a Sequence of Linear Operators
- The essential approximate pseudospectrum and related results
- Demicompact and k-D-Set-contractive Multivalued Linear Operators
- Stability of some essential spectra of closed linear relations on Banach spaces
- A characterization of the condition spectrum on Banach space
- Frobenius–Schur Factorization for Multivalued $${\varvec{2\times 2}}$$ 2 × 2 Matrices Linear Operator
- A characterization of essential pseudospectra of the multivalued operator matrix
- A characterization of the essential approximation pseudospectrum on a Banach space
- Some results on semi-Fredholm perturbations of multivalued linear operators
- Global Bifurcation from the Real Leading Eigenvalue of the Transport Operator
- Perturbation of unbounded linear operators by $$\gamma $$ γ -relative boundedness
- Stability of the essential spectrum of the diagonally and off-diagonally dominant block matrix linear relations
- A Characterization of Some Subsets of Essential Spectra of a Multivalued Linear Operator
- The stability of pseudospectra and essential pseudospectra of linear relations
- Some properties of the Wolf and Weyl essential spectra of a sequence of linear operators ν -convergent
- A Characterization of the Pseudo-Browder Essential Spectra of Linear Operators and Application to a Transport Equation
- A note on the essential pseudospectra and application
- Perturbations of Fredholm linear relations in Banach spaces with application to 3×3 -block matrices of linear relations
- Some properties of upper triangular $$3\times 3$$ 3 × 3 -block matrices of linear relations
- The Weyl essential spectrum of a sequence of linear operators in Banach spaces
- Stability of essential approximate point spectrum and essential defect spectrum of linear operator
- SOME PROPERTIES OF THE M−ESSENTIAL SPECTRA OF CLOSED LINEAR OPERATOR ON A BANACH SPACE
- Stability of the S-left and S-right essential spectra of a linear operator
- A characterization of some subsets of S-essential spectra of a multivalued linear operator
- Spectral Mapping Theorem for Rakocević and Schmoeger Essential Spectra of a Multivalued Linear Operator
- Pseudospectra and Essential Pseudospectra of Multivalued Linear Relations
- On the essential spectra of some matrix of linear relations
- A characterization of the essential pseudospectra on a Banach space
- Stability of the S-essential spectra on a Banach space
- Measures of noncompactness and essential pseudospectra on Banach space
- A note on the spectra of a $3\times 3$ operator matrix and application
مجلات النشر
- Filomat × 21
- Rendiconti del Circolo Matematico di Palermo Series 2 × 6
- Mediterranean Journal of Mathematics × 6
- Boletín de la Sociedad Matemática Mexicana × 5
- Infosys science foundation series × 5
- Journal of Pseudo-Differential Operators and Applications × 4
المنشورات حسب السنة
- 20262
- 202510
- 20246
- 202314
- 202212
- 20216
- 20207
- 20197
- 20186
- 20176
التعاون العلمي
المؤسسات الشريكة : University of Monastir · University of Sousse · Imam Mohammad ibn Saud Islamic University · University of Gafsa
بلدان المؤلفين المشاركين : السعودية
المؤلفون المشاركون
- Aref Jeribi
- Kamel Mahfoudhi
- Bilel Saadaoui
- Ameni Bouchekoua
- Nawrez Lazrag
- Fatima Zohra Boutaf
- Houcem Daoud
- Faiçal Abdmouleh
- Amel Souhail
- Abdessattar Lafi
- Aicha Ezzadam
- Bilel Boukettaya
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