NLAGA-BIRS 2023: Scientific Committee

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Written by Daouda Niang Diatta

Scientific Committee

1. Wilfrid Gangbo, University California at Los Angeles, USA
2. Cedric Villani  Université Claude Bernard, Lyon  et IHES- Paris, France
3. Abba B.  Gumel, University of Maryland, USA
4. Gerard Besson,  Université de Grenoble-Alpes, France
5. Gilles Courtois,  Institut Mathématique de Jussieu,Paris 6, France
6. Clément Mouhot, Cambridge University, United Kingdom
7. Vyacheslav Futorny,  IMSP Brazil
8. Jimmy Lamboley Institut  Mathématiques de Jussieu Paris 6, France
9. Francoise Dalbo,   IRMAR, Université de  Rennes, France
10. Sophie Dabo, Université de Lille, France
11. Antoine Henrot,  Université de Lorraine, France
12. Filippo Santambrogio,  Université Claude Bernard, Lyon, France
13. Christophe Berthon,  Université de  Nantes, France
14. Emmanuel Frénod, Université de Bretagne Sud, France
15. Bruno Colbois,  Université de Neuchatel,  Suisse
16. Volker Schulz, Trier University ,Germany
17. Ahmed Zériahi, Institut de Mathématiques, Toulouse
18. Alexandre Girouard,  Université Laval, Canada
19. Mahaman Bazanfaré,  Université Abdou Moumouni, Niger
20. Abdou Kablan Jérôme,  Université Félix Houphouet Boigny, Côte d’Ivoire
21. Amah D’Alméida, Université de Lomé, Togo
22. Philibert Nang, ENS, Libreville, Gabon et Université de Prétoria, Afrique du Sud
23. Léonard Todjihoundé, IMSP, Université d ‘Abomey Calavi, Bénin
24. Guy Richard Basile Bossoto, Université Marien Ngouabi, Congo Brazzaville
25. Gane Samb Lo, Université Gaston Berger, Sénégal
26. Oumar Traoré, Université Thomas Sankar, Burkina Faso
27. Aliou Diop, Université Gaston Berger, Sénégal
28. Aboubakary Diakhaby, Université Gaston Berger, Sénégal
29. Alassane Diédhiou, Université Assane Seck, Sénégal
30. Marie Salomon Sambou, Université Assane Seck, Sénégal
31. Joel Tossa, IMSP, Université d ‘Abomey Calavi, Bénin
32. Modeste Nzi,  Université Félix Houphouet Boigny, Côte d’Ivoire
33. Oluwole Daniel Makinde, Stellenbosch University, South Africa
34. Mamadou Sango, University of  Pretoria, South Africa
35. Aboubacar Marcos, IMSP, Université d ‘Abomey Calavi, Bénin
36. Youseph Ouknine, Université de Marrakech, Maroc
37. Khalil Ezzinbi, Université de Marrakech, Maroc
38. Guy Degla, IMSP, Université d ‘Abomey Calavi, Bénin
39. Gisèle Mophou, Université de Gouadeloupe, France
40. Olivier François, Université de Grenoble- Alpes, France
41. Etienne Pardoux, Aix Marseille, France
42. Cyriaque Atindogbé, Université Abomey Calavi, Bénin
43. Sado Traoré, Université Nazi Boni, Burkina Faso
44. Papa Ngom , Université Cheikh Anta Diop, Sénégal
45. Athoumane Niang, Université Cheikh Anta Diop, Sénégal
46. Abdoulaye Sène, Université Sine Saloum E. H. Ibrahima Niass
47. Kinvi Kangni, Université Félix Houphouet Boigny, Côte d’Ivoire
48. Diaraf Seck, Université Cheikh Anta Diop, Sénégal

Submitted Papers

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Written by Daouda Niang Diatta

New Research Papers Submitted to NLAGA - BIRS 2023

I. Mathematical Modeling: Analysis, Control, Probability and Statistics 

• Paper 1.Modulus of distortion of a double-connected domain (EYELANGOLI OKANDZE Rufin)
• Paper 2. Distortion in a class of locally quasi-conforming maps (Rufin EYELANGOLI OKANDZE1 & Brayker Tendresse KALOUHOHIKO)
• Paper 3. A New Krasnoselskii's Type Iterative Method For Hammerstein Equations With Monotone Mappings In Certain Banach Spaces (A. A. ADOUM, M. SENE, M. NDIAYE, AND N. DJITTE )
• Paper 4. A Mann Type Iterative Algorithm For Bounded And Strongly Monotone Mappings in Certain Banach Spaces (M. NDIAYE, A.A. ADOUM, M. SENE, AND N. DJITTE)
• Paper 5. Operators intertwinings With Translation Operators On Hypergroups (KOUAKOU GERMAIN BROU, IBRAHIMA TOURE)
• Paper 6. A new fixed point theorem for system of inclusion problems in Banach spaces (Thierno M. M. Sow and Alioune Coulibaly)
• Paper 7. Minimal Time of Null Controllability for the 1D Heat Fractional Equation by a Strategic Profile (Mame Libasse Laye Ane, Cheikh Seck and Babacar Diouf)
• Paper 8. Variational Image Denoising based on Topological Optimization (El Hadji S. Diop, Ousmane Sarr, Alassane Sy and Maïmouna Mbow)
• Paper 9. Multiplicative Noise Removal based on Variational Approach and Topological Optimization (El Hadji S. Diop, Ousmane Sarr, Siriky Diop and Alassane Sy)
• Paper 10. Numerical shape optimization analysis for a metal jet electromagnetic forming inverse problem (Fagueye Ndiaye, Aliou Seck, Babacar Mbaye Ndiaye)
• Paper 11. Mathematical Modeling of the Demographic Dividend Capture Applied in Economy. (Cheikh Gueye, Babacar Toumbou, Abdoulaye Diouf)
• Paper 12. Optimal Covid-19 Control on Effectiveness of Detection Campaign and Treatment (Mouhamadou A.M.T. Balde, Sidy Ly, Ndeye L. Tendeng) 
• Paper 13. Mathematical analysis of a two-patch Neisseria meningitidis serogroup A model (A. Oumar Bah, Mountaga. LAM, S. Bowong)
• Paper 14. Generation and Structural characterization for randomly dispersed nonoverlapping spheres by Lennard-Jones potential based on Molecular Dynamics Simulations and the two-point correlation functions (Souleye KANE, Chamsi SAM, Mactar FAYE)
• Paper 15. Anti-pandemic optimal control strategies and applications (Fulgence Mansal, Mouhamadou A.M.T. Balde  and Alpha O. Bah)
• Paper 16. A numerical method using topological derivative forMaxwell equations (Mamadou Salif Diallo, Alassane SY)
• Paper 17. Large deviations for Mckean-Vlasov jump-equations with subdifferential operator (Alioune Coulibaly, Thierno M. M. Sow and Mamadou M. Mbaye)
• Paper 18. Nonparametric prediction and supervised classi cation for spatial dependent functional data under  xed sampling design (Mamadou NDIAYE, Sophie DABO-NIANG, Papa NGOM, Ndiaga THIAM, Patrice BREHMER, Yeslem EL VALLY)
• Paper 19. Large Deviation Locally Periodic Depending Two Parameters (Ibrahima SANÉ, Jean DIATTA and Clément MANGA)
• Paper 20. Existence in  alpha-norm of μ−pseudo almost automorphic mild solutions for mean field stochastic evolution equations (Mamadou Moustapha Mbaye, Amadou Diop and Moustapha Dieye) 

II. PDE and Inverse Problems

• Paper 21. On The Eigenvalue Problem For Complex Hessian Operators (Papa BADIANE AND Ahmed ZERIAHI)
• Paper 22. Hopf-Lax-Oleinik formula and Viscosity Solutions in the Affine Lie Group (Alioune Mbengue, El Hadji S. Diop, Bakary Manga, and Diaraf Seck)
• Paper 23. Hamilton-Jacobi Equations and Mathematical Morphology in Pseudo-Riemannian Manifolds (El Hadji S. Diop, Alioune Mbengue, Bakary Manga. Diaraf Seck)
• Paper 24. Existence of nontrivial weak solutions for some discrete p(:)-laplacian boundary value problems in n-dimensional Hilbert space with variable exponents (Idrissa IBRANGO 1, Dramane OUEDRAOGO and Aboudramane GUIRO)
• Paper 25. Inverse problem for a parabolic equation in dimension 3 (Christophe Marie Gning, Fagueye Ndiaye, Diaraf Seck, Papa Ngom)
• Paper 26. On a NonLinear Dirichlet Eighenvalue Problem (Rocard Mchel GOUTON, Aboubakar MARCOS and Diaraf SECK)
• Paper 27. Traces Of Pluriharmonic Functions (Seny DIATTA, Souhaibou SAMBOU, Eramane BODIAN, Salomon SAMBOU and Shaban KHIDR)

III. Complex Analysis, Geometric Analysis

• Paper 28. Criterion for the existence of  n-Einstein contact metric structures (Aïssa Wade, Ameth Ndiaye and Abdoul Salam Diallo)
• Paper 29. On timelike Bonnet surfaces in Lorentzian 3-manifold (Athoumane Niang, Ameth Ndiaye, Adama Thiandoum)
• Paper 30. On dual quaternions, dual split quaternions and Cartan-Schouten metrics on cotangent bundles of simple Lie groups (Andre Diatta; Bakary Manga and Fatimata Sy)
• Paper 31. Almost Minimizing Geodesic Rays Infinite Type Hyperbolic Surfaces (Cheikh LO)
• paper 32. Some Geometric Properties On Weil Bundle (ANDRE S. E. MIALEBAMA BOUESSO, BASILE G. R. BOSSOTO)
• Paper 33. Metrics Induced By R^(6+k) On The Graph of k-Smooth Functions And The Hopf Conjecture (ATHOUMANE NIANG, THIERNO SECK AND ADAMA THIANDOUM)
• Paper 34. Contact Structures Coming From Foliations On 2N+1-Closed Manifolds (CHEIKH KHOULE AND AMETH NDIAYE)
• Paper 35. Some results on warped product η-Ricci-Bourguignon solitons (Moctar Traore, Ameth NDIAYE, Mansour Sane)
• Paper 36. Complex structure on Pseudo-Riemannian Poisson manifolds

IV. Geometry Algebra and Applications

• Paper 37. Algebraic Points of Given Degree on the Affine Curve C : y^2 + y = x^5 (El Hadji Sow and Moussa Fall)
• Paper 38. Algebraic points of any degree on the affine curve y^2 = 3x (x^4 + 3) (Pape Modou SARR, Moussa FALL, Oumar SALL)
• Paper 39. Hom-Akivis Color Algebras and Hom-Leibniz-Poisson Color Algebras (Ibrahima BAKAYOKO, Momo BANGOURA, Bakary MANGA)
• Paper 40. Algebraic points of any given degree on the a ne equation curve : y^2 = x^5 + 6912 (Mohamadou M. D. Diallo, Cherif M. COLY, Moussa Fall)
• Paper 41. Parametrization of algebraic points of low degree on the hyperelliptic curves of the a ne equations y^2 = x(x^2− n^2)(x^2 − 4n^2) (Moustapha Camara, Moussa Fall, Oumar Sall)
• Paper 42. The Rozenberg-Zelinsky sequence for the category of the dyslectic Hopf Yetter-Drinfel’d (S;H)-module algebras (Christophe Lopez NANGO)
• Paper 43. Points quartiques sur C2(7) (Chérif Mamina COLY, Mohamadou Mor Diogou diallo et Moussa fall)
• Paper 44. Fourth Hankel Determiant Problem Based On The Janowski Function

Scientific Program

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Written by Daouda Niang Diatta

Scientific Program

The biennial's scientific program revolves around 8 guest speakers and the presentation of 20 selected new research papers among the 44 submitted.

Guest speakers will give a 1 hour talk (45 minutes for the presentation and 15 minutes for interactions) and research papers will be presented in 30 minutes (25 minutes for presentation and 5 minutes for interaction).

Download here the scientific program and the timetable of the different activities of the NLAGA - BIRS 2023.

Guest Speakers. 

1 . Prof Ngalla DJITTE

• Institution: Department of Mathematics, Gaston Berger University, Saint Louis, Senegal
• Web page: https://sites.google.com/site/ngalladjitte
• Conference Title: Recent Contributions On Inverse Problems and On Iterative Method For Some Nonlinear Equations In Classical Banach Spaces.
• Abstract: First, we present recent contributions of our group to inverse problems from demand theory in economy and from calculus of variations. The tools used here are that of exterior differential systems. Second, we present an in-depth and up-to-date coverage of the main ideas, concepts and most important results on iterative algorithms for the approximation of zeros of accretive and monotone type mappings, of solutions of Hammerstein type equations involving accretive and monotone type mappings. We also present some applications to convex minimization problems and to variational inequality problems.

2.  Prof Wilfried GANGBO

• Affiliation: Department of Mathematics, University Of California, Los Angeles, USA
• Web page: https://www.math.ucla.edu/~wgangbo/
  
• Conference Title:  Recent Progress on Master equations in Mean Field Games.
• Abstract: Mean Field Games were independently introduced by LasryLions, and by HuangCainesMalham ́e, to study strategic decision making by small interacting agents in very large populations. The master equation is a HamiltonJacobi equation on the set of probability measures, which encapsulates all the game information, but its non-local nature makes a well posedness theory a challenge, unless a monotonicity condition is satisfied by the data. The first successful condition was the so-called LasryLions monotonicity condition. To handle nonseparable Hamiltonians, we introduce an alternative condition which we term displacement monotonicity. The latter condition allows to also handle games which are either only deterministic or games where only the common noise is present. (This talk is based on works in collaboration with A. Meszaros, C. Mou and J. Zhang).

3. Prof Françoise DAL'BO

• Affiliation: Institut de Recherche Mathématique de Rennes, Rennes 1 University, France.
• Web page: https://perso.univ-rennes1.fr/francoise.dalbo/
  
• Conference Title: Sur les variétés fortement stables du flot géodésique sur une surface hyperbolique.
• Abstract: Nous nous intéresserons à la topologie des variétés fortement stables du flot geodesique et décrirons un exemple inattendu construit par Alexandre Bellis.

4.  Prof Alassane SY

• Affiliation: Department of Mathematics, University Alioune Diop, Bambey, Senegal.
• Webpage: http://www.uadb.edu.sn/pr-alassane-sy
  
• Conference Title: Couplage en optimisation de formes et quelques applications
• Abstract:  L'objectif de cette présentation est de faire une brève introduction à l'optimisation de formes (géométrique et topologique), rappeler quelques résultats principaux. Ensuite, nous proposons une méthode qui permet de faire un couplage entre ces deux techniques d'optimisation. Nous terminons par donner queques applications pratiques.

5.  Prof Khalil EZZINBI

• Affiliation: Department of Mathematics,  Cadi Ayyad University, Maroc
• Webpage: 
  
• Conference Title:  Oscillatory Dynamics For Evolution Equations Using Favard's Theory In Uniformly Convex Banach Spaces.
• Abstract: In this work, we use an approach due to Favard (Acta Math 51:3181, 1928) to study the existence of weakly almost periodic and almost automorphic solutions for some evolution equation whose linear part generates a C0-group satisfying the Favard condition in uniformly convex Banach spaces. When this C0-group is bounded, which is a condition stronger than Favard's condition, we prove the equivalence between almost automorphy and weak almost automorphy of solutions.

6. Prof Babacar Mbaye NDIAYE

• Affiliation : Department of Mathematics of Decision, University Chdeikh Anta Diop, Dakar, Senegal
• Webpage: https://scholar.google.com/citations?user=HVY4_rcAAAAJ&hl=en
  
• Conference Title:  DC Programming: Theory And Applications
• Abstract: We develop a theory of optimization for a class of smooth/nonsmooth nonconvex functions, called DC - Difference of Convex - functions. In many cases, objective function and constraints are not convex, and so methods on convex functions prove insufficient. DC programming constitutes the backbone of smooth/nonsmooth nonconvex programming and global optimization (which is concerned with finding global solutions to nonconvex programs). Most real life optimization problems are nonconvex. As an application, it is discussed how to determine the automated guided vehicle dispatching in port container terminals to reduce the AGV processing time (loading and discharging) and guarantee port efficiency. The problem statement and its mathematical formulation are developed. It can be reformulated, thanks to exact penalty techniques in DC Programming, as a polyhedral DC Program and globally solved.

7.  Prof Mouhamadou SY

• Affiliation: Research Chair Holder of Mathematics and its Applications, AIMS-Senegal.
• Web page: https://m-sy.org/
• Conference Title: Probabilistic approach to nonlinear PDEs
  
• Abstract: Probabilistics methods have become particularly fruitful in the analysis of nonlinear partial differential equations, allowing to achieve groundbreaking results towards initial value problems and asymptotic in time properties. In this talk, I will present some principles of this approach and discuss recent developments as well as some interesting perspectives.

8.  Prof Athoumane NIANG

• Affiliation: Department of Mathematics, University Chdeikh Anta Diop, Dakar, Senegal
• Web page: https://recherche.ucad.sn/?q=athoumane.niang
  
• Conference Title: Sur la Conjecture de Hopf.
• Abstract: (1) Présentation de la conjecture de Hopf. (2) Quelques travaux sur la conjectures, en particuliers nous parlerons de résultats obtenus avec de jeunes collaborateurs sur cette conjecture.
  
  

Selected New Research Papers To Be Presented

Third Edition of the NLAGA Biennial International Research Symposium

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Written by Daouda Niang Diatta

Third Edition of the Non Linear Analysis Geometry and Applications Biennial International Research Symposium.
(Third Edition NLAGA-BIRS) 

• Place: AIMS-SENEGAL Center, Mbour, Senegal.

• Dates: From August 21 to 27, 2023.  

  Registration Procedure : Registration is Required to participate in the NLAGA- BIRS Conference. To register, please complete the following form :  registration form

• Description: The NLAGA's Biennial International Research Symposium (NLAGA-BIRS) is intended to gather African expertises in Non Linear Analysis, Geometry and their Applications with their International Partners in a four days conference where new mathematical results, in various directions, will be presented and discussed.The main objective of this conference is to lay the foundations of a regular African journal on non linear analysis, geometry and their applications. For this second edition of the NLAGA-BIRS, original presented research papers will be published by Birkhäuser after a submission and review process planed as follow :

  1. Papers Submission Period: From February 01, 2023 to May 31, 2023.
  2. Review Period: From February 01, 2023 to August 15, 2023.
  3. Notification of Acceptance / Rejection: , August  20, 2023.
  4. Camera-Ready Copy due: January, 2024.
  
  
• Paper Submission Procedure: By email to  This email address is being protected from spambots. You need JavaScript enabled to view it.
• Editorial Board:
• Kinvi Kangni
• Philibert Nang
• Marie Salomon Sambou
• Diaraf Seck