March 1994 (Monastir, Tunisie): Deuxième Colloque de la Société Mathématique de Tunisie. "Opérateur d'entrelacement des représentations monomiales des groupes de Lie nilpotents".
August 1994 (Moscou, Russia): Participation au Congrès International de Mathématiques à Moscou organisé par l'International Sophus Lie Centre et la Russian Independant University. " On the cortex of two and three steps nilpotent Lie groups".
October 1995 (Luxembourg): Centre Universitaire de Luxembourg. "Méthode d'orbites et désintégration des représentations unitaires des groupes de Lie nilpotents".
June 1996 (Metz, France): Colloque Metz-Nancy-Strasbourg. " Sous-groupes de Kazdhan et moyennes invariantes sur la sphère".
February 1997 (Luxembourg): Centre Universitaire de Luxembourg. "Analyse multirésolution, bases orthonormées et bases de Riesz".
June 1997 (Poitiers, France): Colloque en l'honneur de Pierre Bernat, Université de Poitiers."Séparation des représentations unitaires des groupes de Lie nilpotents".
February 1998 (Paris, France): Paris 7, Jussieu. "Analyse harmonique sur les espaces homogènes exponentiels".
June 1998 (Leiden, Pays Bas): Leiden University, The Netherlands, ESGT 98/ European School in Group Theory. "Harmonic Analysis for Certain Monomial Representations of an Exponential Solvable Lie Group".
March 1999 (Tabarka, Tunisia): Colloque de la Société Mathématique de Tunisie. "Frobenius reciprocity and differential operators on certain solvable homogeneous spaces.”
April 1999 (Las Vegas, U.S.A): Sectional Meeting of the American Mathematical Society, Las Vegas (U.S.A)."Generalized Moment Sets and Unitary Representations of Exponential Solvable Lie Groups ".
April 1999 (Saint-Louis, U.S.A): The Department of Mathematics and Computer Science. The University of Saint Louis at Missouri.
February 2000 (Monastir, Tunisia): "Opérateurs Différentiels sur l’espace de la restriction d’une représentation unitaire d’un groupe de Lie résoluble exponentiel ".
July 2000 (Barcelone, Spain): European Congress of Mathematics: "Differential Operators on the Space of a Unitary Representation of Exponential Lie Groups".
July 2000 (Vigo, Spain): First Colloquim on Lie Theory and applications: "Harmonic Analysis on Some Exponential Solvable Homogeneous Spaces".
August 2000 (Odense, Danemark): European School in Group Theory and Plancherel Formula: " The Penney-Fujiwara-Plancherel Formula of Nilpotent Lie Groups ".
March 2001 (Hammamet, Tunisia): SMT 2001. " Analyse Harmonique sur les Espaces homogènes Exponentiels ".
October 2001 (Luxembourg): "Estimation de la norme de la transformée de Fourier Lp sur les groupes résolubles ".
October 2001 (Nancy, France): " Estimation de la norme de la transformée de Fourier Lp sur les groupes de Lie nilpotents ".
October 2001 (Metz, France): "Commutativité des sous-algèbres dans l’algèbre enveloppante d’un groupe de Lie nilpotent ".
August 2002 (Bejing, China): International Congress of Maths, ICM 2003: "Differential operators on the space of restricted representations on nilpotent Lie groups".
December 2002 (Clermont Ferrand, France): "Multiplicités des Représentations mixtes des groupes de Lie complètement résolubles".
February 2003 (Vienna, Austria): International workshop on Idempotent Mathematics and dequantization. "Dequantization of coadjoint orbits: Moment sets and Characteristic varieties".
August 2003 (Edmonton, Canada): Banach Algebra 2003. " The Cowling-Price Theorem for Nilpotent Lie Groups ".
September 2003 (Munich, Germany): GSF-International workshop on Uncertainty priciples. GSF-International workshop on Uncertainty priciples. " Some Uncertainty principles on Nilpotent Lie Groups ".
September 2003 (Sfax, Tunisia): Troisièmes Journées d’Analyse harmonique. : " Sur Certains Principes d’incertitude sur les groupes de Lie Nilpotents ".
October 2003 (Luxembourg): " Le Théorème de Cowling-Price sur les groupes de Lie Nilpotents ".
December 2003 (Clermont Ferrand, France): " Le Théorème de Cowling-Price sur les groupes de Lie Nilpotents ".
June 2004 (Escorial, Spain): " Some Uncertainty principles and Harmonic Analysis on Nilpotent Lie Groups ".
July 2004 (Istanbul, Turkey): " Differential Operators on the space of a Restricted Representation on Nilpotent Lie groups ".
November 2004 (Awajishima, Japan): "Weak proper actions on exponential homogeneous spaces ".
April 2005 (Munich, Germany): "Some uncertainty principles on NPC nilpotent Lie groups".
May 2005 (Dijon, France): "Sur les actions propres sur les espaces homogènes nilpotents".
June 2005 (Kiel, Germany): "Some uncertainty principles on NPC nilpotent Lie groups".
April 2006 (Paderborn, Germany): "The Cowling-Price Theorem on 2-NPC nilpotent Lie groups".
July 2006 (Istanbul, Turkey):"Weak proper actions on solvable homogeneous spaces ".
September 2006 (Clermont-Ferrand, France):"Actions faiblement propres sur les espaces homogènes exponentiels".
December 2006 (Dijon, France): "Actions faiblement propres sur les espaces homogènes résolubles".
February 2007 (Kyushu, Japan): "Proper and weak proper actions on solvable homogeneous spaces ".
February 2007 (RIMS-Kyoto, Japan): "Some uncertainty principles on nilpotent Lie groups ".
May 2007 (Oujda, Morocco): "Opérateurs d’entrelacement des representations monomiales des groupes de Lie nilpotents".
September 2007 (Metz, France): "Harmonic Analysis on monomial representations of a nilpotent Lie groups ".
November 2007 (Dijon, France): "Harmonic Analysis on monomial representations of a nilpotent Lie groups ".
December 2007 (Hong-Kong): "Deformation spaces of an action of discontinuous subgroups on nilpotent homogebeous spaces ".
April 2008 (Paderborn, Germany): "Deforming discontinuous subgroups on homogeneous spaces".
June 2008 (Elescorial, Spain): "On Hardy’s Theorem on connected nilpotent Lie group".
August 2008 (Bangalore, India) (two lectures): "General Uncertainty principles on solvable Lie groups ".
November 2008 (Luminy, Marseille):"The deformation spaces of the action of discontinuous subgroups acting on solvable homogeneous spaces".
November 2008 (Atami, Japan):"The deformation spaces of the action of discontinuous groups acting on solvable homogeneous spaces ".
February 2009 (Kyushu, Japan): "Rigidity property of deformations on nilpotent Lie groups ".
April 2009 (Kénitra, Morocco): "Description de l’espace de deformation des actions des groupes discontinus".
July 2009 (Casablanca, Morocco): "Sur certains principes d’incertitude pour les groupes de Lie nilpotents".
December 2009 (Taiwan): "The Plancherel Theorem of monomial representation of exponential discrete type".
March 2010 (SMT, Sousse): "Some uncertainty principles on solvable Lie groups".
July 2010 (Oulou, Finland): "On sharpness problems of some uncertainty principles on nilpotent Lie groups".
June 2011 (Luxembourg): "Estimate of the Fourier transform norm on some Lie groups".
June 2011 (China): "Some uncertainty principles on certain Lie groups".
March 2012 (HRI, India): "The representation theory of nilpotent Lie groups". (Four lectures)
September 2012 (MIMS, Tunis): "The theory of discontinuous subgroups acting on homogeneous spaces".
October 2012 (Nice, France): "On the geometry of discontinuous subgroups acting on homogeneous spaces".
November 2012 (Tokyo): "On the geometry of discontinuous subgroups acting on solvable homogeneous spaces".
November 2012 (Tokyo): "Some aspects of the deformation theory of discontinuous subgroups of solvable homogeneous spaces".
Decemmber 2012 (Sousse) :"Harmonic analysis on monomial representations of exponential solvable Lie groups".
January 2013 (Kyushu, Japan): "Harmonic analysis on monomial representations of discrete type of exponential solvable Lie groups".
April 2013 (Clermont-Ferrand, France): "Sur les representations de type discret des groups de résolubles exponentials".
Mai 2013 (Granada, Spain): "On the $L^p-$Fourier transform norm on some Lie groups".
February 2014 (Tsukuba): "On the Fourier transform on some Lie groups".
February 2014 (Kyushu, Japan): "On the theory of deformation of discontinuous actions on homogeneous spaces".
December 2014 (Marrakech, Morocco): "On the Lp-Fourier transform norm on some Lie groups".
January 2015 (Hammamet, Tunisia): "On the Fourier transform on some Lie groups".
August 2015 (Halifax, Canada): "On the Lp-Fourier transform norm on some Lie groups".
December 2015 (New Delhi): "Estimate of the Lp-Fourier transform norm on certain Lie groups".
February 2016 (Tsukuba, Japan): "Some uncertainty principles on certain Lie groups ".
September 2016 (Tsukuba, Japan): "Hardy’s theorem on Lie groups".
January 2017 (Tottori, Japan): "Monomial representations of discrete types for certain exponential Lie groups ".
July 2017 (Oberwolfach, Germany): "On the Lp-Fourier transform norm for some solvable Lie groups and their compact extensions". https://www.mfo.de/occasion/1730/www_view
January 2018 (Bilbao, Spain):“Some uncertainty principales on solvable Lie groups and their compact extensions” https://sites.google.com/site/uncertainty2018/
February 2018 ((The Tunisian Academy of Sciences, letters and Arts: Beit al HikmaTunisian Academy of Sciences, Letters and Arts: Beit Elhikma): "L'infini". http://www.beitalhikma.tn/conference-linfinijeudi-22-fevrier-201816h00/?lang=fr
March 2018 (TEM2018: Ibn Tofail, Kenitra Morocco): "On the L^p Fourier Transform on some Lie groups". http://ensa.unit.ac.ma/tem2018
May 2018 (Casablanca, Morocco). Harmonic Analysis and Integral Geometry: "A full generalized version of Hardy's Theorem on nilpotent Lie groups".
June 2018 (20-23, University of Haute Alsace, Mulhouse, France): Algebra and Lie Theory Conference. "Monomial representations of discrete type and differential operators". http://www.math.uha.fr/webALT18/home.html
September 2018 (Rabat, Morocco). Académie Hassan II des Sciences et Techniques: Mathématiques, Applications et Interactions avec la Physique: Quelques propriétés de la transformée de Fourier sur certains groupes de Lie.
October 2018 (IHES, PARIS-SACLAY, https://www.ihes.fr/): "On the deformation theory of discontinuous groups acting on solvable homogeneous spaces" https://indico.math.cnrs.fr/event/3969/
October 2018 (Metz, Université de Lorraine, France): "C'est quoi l'analogue du Théorème de Müntz-Szász pour un groupe de Lie?" Théorie de Lie, Géométrie et Analyse (LieGA): http://www.iecl.univ-lorraine.fr/Les-Seminaires/LieGA/
October 2018 (Journées SL2(R) à Reims): "Does "ax+b" stand for the solvable analogue of SL2(R) in deformation theory ?" https://indico.math.cnrs.fr/event/3782/overview
October 2018 (Laboratoire de Mathématiques Blaise Pascal, Clermont-Ferrand): "Représentations monomiales des groupes de Lie exponentiels et opérateurs différentiels" http://recherche.math.univ-bpclermont.fr/seminaires/gt_gaao.php
December 2018 (Graduate School of Mathematical Sciences, University of Tokyo): "Monomial representations of discrete type and differential operators": https://www.ms.u-tokyo.ac.jp/seminar/2018/sem18-268_e.html
December 2018 (Faculty of Mathematics, Kyushu University, Japan): "Müntz-Szàsz analogues for some compact extensions of nilpotent Lie groups".
February 2019 (Graduate School of Mathematics, Nagoya, Japan): "Harmonic analysis on monomial representations of exponential Lie groups and a counterexample to Duflo’s Conjecture": http://www.math.nagoya-u.ac.jp/en/research/calendar/data/1547169713-98.html
April 2019 (Marrakech, Morocco, In memory of Ahmad Intissar): "Harmonic analysis around monomial representations of exponential Lie groups": https://icmmp2019.doodlekit.com/
April 2019 (American University of Sharjah, UAE. Department of Mathematics and Statistics): "Branching laws of some unitary representations of exponential Lie groups and related differential operators algebras".
April 2019 (New York University Abu Dhabi, UAE): "Some problems related to Fourier analysis on solvable Lie groups and their compact extensions".
July 2019 (Winnipeg, Canada): Banach Algebra 2019. "Some uncertainty principles on nilpotent Lie groups (in memory of Eberhard Kaniuth)": https://server.math.umanitoba.ca/~banach2019/
October 2019 (Errachidia, Morocco): Workshop on Harmonic Analysis and Integral Geometry with Applications. "Sharpness problems related to some uncertainty principles on nilpotent Lie groups": https://whaiga2019.sciencesconf.org/resource/page/id/13
July 2020 (Tunis): GTT 1 : Geometry and Topology in Tunisia I. "Est ce que la géométrie des orbites coadjointes serait derrière une preuve de la conjecture polynomiale des restrictions nilpotentes?" https://www.mims-institut.org/events/
December 2021 (Hansraj College, India): Online International Conference on Recent Trends in Mathematics. "The $L^p$-Fourier transform norm on compact extensions of locally compact groups" https://mathshrc.com/conference/
February 2022 (Indian Institute of Science, Bangalore, India): Analysis and Probability Research Group (APRG): "The $L^p$-Fourier transform norm on compact extensions of locally compact groups" http://math.iisc.ac.in/~aprg/index.php?id=seminar21-22
March 2022 (Mahdia, Tunisia): 25th Meeting of the Tunisian Mathematical Society: "A proof of the polynomial conjecture for restrictions of nilpotent Lie groups representations" http://www.tms.rnu.tn/index.php?afficher_page=colloque2022.php#pre
June 2022 (Reims University, France): Symmetry in Geometry and Analysis (In honor of the 60th birthday of Toshiyuki Kobayashi): "On the polynomial conjecture for restrictions of nilpotent Lie groups representations" https://sites.google.com/view/tk60/home?authuser=0
August 2022 (Université Marien Ngouabi, Brazzaville, Congo): "On polynomial conjectures for nilpotent Lie groups unitary representations" https://www.pacom2022.com/
September 2022 (Tokyo University, Japan): Geometry, Analysis, and Representation Theory of Lie Groups (by the occasion of the 60th birthday of Toshiyuki Kobayashi): "A Collaboration with Toshiyuki Kobayashi, Fruitful present and Thriving future" https://sites.google.com/view/tk60tokyo
September 2022 (Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Indonesia: Online seminar): "Estimate of the $L^p$-Fourier transform norm on certain locally compact groups" http://www.fmipa.unpad.ac.id
Novembre 2022 (Hammamet, Tunisia): Journées Analyse Mathématique et Applications 2022 (In honor of Mohamed Sifi): "The $L^P$-Fourier transform norm for some compact extensions of Lie groups" http://www.tms.rnu.tn/cv/confposter922.pdf
Novembre 2022 (Univ. du Littoral Côte d’Opale Calais, France): GDR Renormalisation Annual Meeting 2022 (In honor of Dominique Manchon): "Frobenius Exponential Lie algebras and Zariski Closure Conjecture: A longstanding work with Dominique Manchon " https://sites.google.com/view/gdrrenorm2022/home?authuser=0
February 2023 (Public Authority for Applied Education and Training (PAAET), Kuwait): "Switching from commutative to non-commutative harmonic analysis and Lie groups interpretation"
March 2023 (Tottori University, Japan): "On polynomial Conjectures for nilpotent Lie groups unitary representations"
March 2023 (RGOSA online seminar: Research Group on Ordered Structures with Applications): "On polynomial Conjectures for nilpotent Lie groups unitary representations" https://rgosa.net/seminar/season-2022-2023/
April 2023 (Euro-Maghreb Conference in Algebra, Geometry and Lie Theory, Sousse, Tunisia): "On polynomial Conjectures for nilpotent Lie groups unitary representations"
May 2023 (Harmonic Analysis and PDEs: Université Félix Houphouët-Boigny - Abidjan (Côte d'Ivoire)): "The $L^p$-Fourier transform norm for some Lie groups" https://www.gahaa.ci/
June 2023 (Research Seminar "Differential geometry and Analysis": Philipps Universität Marburg (Allemagne)): Deformation of Discontinuous groups acting on Homogeneous Spaces. https://www.mathematik.uni-marburg.de/~agricola/FS.html
July 2023 (The 9th SEAMS-UGM 2023 International Conference on Mathematics and Its Applications, Indonesia): "On polynomial Conjectures for nilpotent Lie groups unitary representations" https://seams-ugm.id/AlgebraMS/
July 2023 (Guest Lecture and Research Sharing “Representation Theory of Lie Groups and Its Applications” Universitas Padjadjaran, Bandung, Indonesia): "Representation Theory of Lie Groups and Differential Geometry" https://fmipa.unpad.ac.id/guest-lecture-and-research-sharing-representation-theory-of-lie-groups-and-its-application/
September 2023 (OCAMI workshop: "Representation Theory and Differential Geometry on homogeneous spaces": Osaka Metropolitan University, Japan): "The Zariski Closure Conjecture of coadjoint orbits of exponential solvable groups" https://sites.google.com/view/tunisian-japanese-conference/home/2023-7th/ocami-workshop
November 2023 (7th Tunisian-Japanese Conference: "Geometric and Harmonic Analysis on Homogeneous Space and Applications": Monastir, Tunisia): "On polynomial Conjectures for nilpotent Lie groups unitary representations" https://sites.google.com/view/tunisian-japanese-conference/home/2023-7th?authuser=0
December 2023 (Department of Mathematics, University of Delhi, India): "The $L^p$-Fourier transform norm for some Lie groups" https://maths.du.ac.in/Events/PDF/Baklouti-talk.jpg
December 2023 (18th Discussion Meeting in Harmonic Analysis. In honor of the centenary year of Harish Chandra, Department of Mathematics, IIT Guwahati India: "The polynomial Conjecture for monomial representations of discrete type of an exponential solvable Lie group" https://event.iitg.ac.in/dmha18/
January 2024 (International Conference of Mathematics and Applications ICMA2024: Mata Sundri College of Women: University of Delhi, India) "Polynomial conjectures for unitary representations of a nilpotent Lie group" https://conferences.mscw.ac.in/
March 2024 (First International Conference of Harmonic Analysis and Applications, Casablanca, Morocco) “Estimate of the $L^p$-Fourier transform norm for compact extensions of locally compact groups” https://ichahsa-casa.sciencesconf.org/resource/page/id/20
• 1998 and 2000: University of Metz (France). (By Professor Jean Ludwig).
• 1999: Saint-Louis, Missouri, USA. The Department of Mathematics and Computer Sciences. (By Professors Chal Benson and Gail Ratcliff).
• 2001 : University of Nancy (France). Institut Henri Poincaré. (By Professor Dominique Manchon, Project CNRS-DGRST).
• 2002: University of Kinki, Fukuoka, Japon. Institute of Technology. (By Professor Hidenori Fujiwara).
• 2002 and 2003 : University of Clermont-Ferrand (France). University Blaise Pascal. (By Professor Dominique Manchon, Project CNRS-DGRST).
• 2004 : RIMS, Kyoto. (By Professor Toshiyuki Kobayashi).
• 2006: University of Clermont-Ferrand. University Blaise Pascal. (By Professor Dominique Manchon, Project CNRS-DGRST).
• 2006: University of Paderborn (Germany). (By Professor Eberhard Kanuith).
• 2007: University of Kinki, Fukuoka, Japan. Institute of Technology. (By Professor Hidenori Fujiwara).
• 2007: RIMS, Kyoto. (By Professor Toshiyuki Kobayashi).
• 2007 : Max-Planck Institute. Bonn, (Germany). (By Professor Bernhard Krötz).
• 2007: Universities of Clermont-Ferrand and Bourgogne. (By Professors Dominique Manchon and Didier Arnal).
• 2007: University of Luxembourg. Département de Mathématiques. (By Professor Carine Molitor-Braun).
• 2008: University of Paderborn (Germany). (By Professor Eberhard Kanuith).
• 2008: Indian Institute of Science, Bangalore (India). (By Professor Sunduram Thangavelu).
• 2008: Universities of Clermont-Ferrand and Bourgogne. (By Professors Dominique Manchon and Didier Arnal).
• 2009: University of Kinki, Fukuoka, Japan. Institute of Technology. (By Professor Hidenori Fujiwara).
• 2009: University of Clermont-Ferrand. University Blaise Pascal. (By Professor Dominique Manchon).
• 2010: University of Clermont-Ferrand. University Blaise Pascal. (By Professor Dominique Manchon).
• 2011: University of Metz. (By Professor Jean Ludwig).
• 2011: University of Clermont-Ferrand.University Blaise Pascal. (By Professor Dominique Manchon).
• 2011: University of Oulou (Finland). (By Professor Mahmoud Filali).
• 2012: University of Allahabad. Harish-Chandra Institute. (By Professor Ratnakumar P. K).
• 2012 University of Tottori. (By Professor Junko Inoue).
• 2012: University of Metz. (By Professor Jean Ludwig).
• 2012-2013: JSPS grant. (Fukuoka, Tottori and Tokyo) (By Professor Hidenori Fujiwara).
• 2013: University of Clermont-Ferrand. University Blaise Pascal. (By Professor Dominique Manchon).
• 2015: University of Tottori and University of Nagoya. (By Professors Junko Inoue and Hideyuki Ishi).
• 2017: University of Metz. (By Professor Jean Ludwig).
• 2017: University of Tottori and Tsukuba. (By Professors Junko Inoue and James Cole).
• 2017: University of Tokyo. (By Professor Toshiyuki Kobayashi).
• 2018: University of Clermont-Ferrand. University Blaise Pascal. (By Professor Dominique Manchon).
• 2018: IHES (Institut des Hautes Études Scientifiques, UNIVERSITÉ PARIS-SACLAY): https://www.ihes.fr/
• 2019: Graduate School of Mathematics, Nagoya University. (By Professor Hideyuki Ishi).
• 2019: IHES (Institut des Hautes Études Scientifiques, UNIVERSITÉ PARIS-SACLAY). (By Professor Fanny Kassel).
• 2020: University of Lorraine (Metz). (By Professors Camille Laurent-Gengoux and Jean Ludwig).
• 2022: Osaka Metropolitan University (By Professor Hideyuki Ishi).
• 2023: University of Tottori, Japan. (By Professor Junko Inoue).
• 2023: Osaka Metropolitan University (By Professor Hideyuki Ishi).