GRAID Graduate Assistantships in Developing Countries.
La Commission pour les Pays en Développement de l'Union Mathématique Internationale a créé le programme GRAID (Graduate Assistantships in Developing Countries). Son objectif est de permettre à des étudiants de pays défavorisés de poursuivre leurs études et de préparer un master ou une thèse en mathématiques dans leur pays, grâce à un soutien financier minimal. Les dons sont à adresser au CIMPA (Centre International de Mathématiques Pures et Appliquées), association reconnue d'utilisé publique, ce qui permet aux contribuables français de bénéficier d'une déduction fiscale pour leurs dons - voir le site du CIMPA Donation à GRAID (Graduate Research Assistantships In Developing countries)

Graduate Assistantships in Developing Countries (GRAID) Supporting Mathematics Graduate Students in the Countries that Need it Most. By Jose Maria Balmaceda, C. Herbert Clemens, Ingrid Daubechies, Angel R. Pineda, Galina Rusu, and Michel Waldschmidt. Notices of the American Mathematical Society, 70 n°8 September 2023, 1281-1284

IMU CDC established in 2017 the Graduate Research Assistantships in Developing Countries (GRAID) Program.
The GRAID program provides modest support for emerging research groups, working in a developing country listed in Priority 1 or 2 of the IMU Definition of Developing Countries, to fund their most talented students to study full-time as graduate research assistants. Supported students must pursue a Master or PhD graduate degree in mathematics, thereby fostering the growth of a mathematics community.
The students will receive a monthly stipend to study full-time and pursue a Master or PhD graduate degree in mathematics. Additionally, the program supports them by establishing their networks with an international mathematician.
Funding for the graduate research assistantships is provided by voluntary donations from mathematicians or mathematical institutions worldwide.
🔔 The 2026 call for applications is open, with deadline May 15, 2026

IMU News 135: January 2026
News from the Commission for Developing Countries (CDC)
   Grants for institutions
   • Volunteer Lecturer Program
         next deadline:
         🔔 April 1, 2026 (23:59 CET) for courses to be held between August 1, 2026 and August 1, 2027
   Grants for conferences organizers
   • Conference Support Program
         next deadline:
         🔔 April 15th, 2026 for conferences starting after August 15th, 2026
   Grants for research visits
   • IMU-Simons Research Fellowship Program for Developing Countries
         next deadline:
         🔔 April 15th, 2026 for research visits starting between August 15th, 2026 and August 15th, 2027
   Postgraduate studies in a developing country.
   • IMU-Breakout Graduate Fellowship Program.
         🔔 The 2026 call for nominations is open, with deadline May 30, 2026
   • Graduate Research Assistantships in Developing Countries (GRAID) Program.
         🔔 The 2026 call for applications is open, with deadline May 15, 2026
   Library Assistance Scheme (no fixed deadline)

Chaire Pays du Sud, Centre International de Rencontres Mahématiques (CIRM)
The second edition of the “Pays du Sud” Chair for 2026, with financial support from CNRS and in partnership with CIMPA, is designed to promote inclusive scientific collaboration between France and Africa.
   CALL FOR CANDIDATES TO HOLD A 1-2 MONTH CHAIR AT CIRM DURING THE SECOND SEMESTER 2027
   APPEL À CANDIDATURES POUR PORTER UNE CHAIRE DE 1 À 2 MOIS AU CIRM DURANT LE DEUXIÈME SEMESTRE 2027
   Opening date: January 14, 2026 – Deadline date: April 15, 2026

EMS CDC Funding
Applications for individual travel grants and grants for organizing scientific events can be submitted throughout the year and are reviewed at two deadlines (February 28 and August 31), for events or activities that are scheduled to happen at least 2 months after the relevant deadline. Funding usually ranges from 1000 to 2000 euros.

Graduate School for Mathematical Sciences (PGSM)
L'appel à candidatures internationales du programme de bourses de master Paris Graduate School for Mathematical Sciences (PGSM) de la Fondation Sciences Mathématiques de Paris fermera le mardi 3 février 2026 (à 23h59, heure de Paris). Cet appel est réservé aux étudiant•e•s de L3 ou de M1 ayant effectué leur cursus hors de France. Les candidatures se font exclusivement via le formulaire en ligne
The international call for applications to Paris Graduate School for Mathematical Sciences (PGSM), the master scholarships program of the Fondation Sciences Mathématiques de Paris, will close on Tuesday February 3rd 2026 (at 11:59 p.m., Paris time). This call is reserved for students in their third year of undergraduate studies or first year of master's studies who have completed their studies outside France. Application form.

Agenda

Archives from September 2004 till now.

Prochaînement - Coming soon

February 17-20, 2026, Brunéi Darussalam.
Universiti Brunei Darussalam UBD.
February 21-23, 2026, Manila.
University of the Philippines Diliman.
Congruence & Convergence: A Conference in Celebration of Fidel Nemenzo’s 65th Birthday.
February 21, 2016, Talk On multicyclotomic polynomials and binary forms.

Thursday, April 16, 2026 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST) Friday, April 10, 2026 (1am AEST, 3am NZST)
Number Theory Web Seminar.

April 20-22, 2026, Università Roma Tre (Italy).
The ninth mini symposium of the Roman Number Theory Association, Dipartimento di Architettura, Largo Giovanni Battista Marzi 10.

April 23 - 25, 2026, Amsterdam.
Annual meeting of the EMS Committee for Developing Countries, European Mathematical Society.

May 3 - 14, 2026, Erbil, Iraki Kurdistan.
KAP: Algebra " multiple hands " program in Kurdistan. Salahaddin University Erbil. Course on Finite Groups.

May 20 – 23, 2026, Oujda, Morocco.
5th International Congress on Algebra, Number Theory and Their Applications (ICANTA’5). Faculty of Sciences, Mohammed Premier University.

31 août - 4 septembre 2026, Lausanne,
Bernoulli Center, EPFL, FOUVRY73
°⺣ a FOUr-week Voyage thRough analYtic number 7h3ory ⺣° workshop in celebration of Étienne Fouvry’s 73rd birthday.

15-16 Septembre 2026, IHP, Paris
Conférence Serre 100, A conference in honor of Jean-Pierre Serre on the occasion of his 100th birthday.

October 2026, India.
October 5 - 9, 2026, Indian Institute of Technology Guwahati (IITG), Department of Mathematics. 9th edition of `International Conference on Class Groups of Number Fields and Related Topics (ICCGNFRT-2026).

Research papers (submitted) - Articles de recherche (soumis)

With Etienne Fouvry,
Number of integers represented by families of binary forms (III): fewnomials. 44 p. arXiv:2509.08335 [math.NT] HAL 05247823.

With Etienne Fouvry,
On the convexity of the fundamental domain of binary cyclotomic forms.

Research paper (to appear) - Article de recherche (à paraître)

With Etienne Fouvry,
Corrigendum à l'article: Sur la représentation des entiers par les formes cyclotomiques de grand degré. Bull. Soc. Math. France 148 (2020), no. 2, 253--282.

Research papers (recently published) - Articles de recherche (viennent de paraître)

With Cristiana Bertolin
Variations on Schanuel's Conjecture for elliptic and quasi--elliptic functions I: the split case. Hardy-Ramanujan Journal 48 (2025), 10-29.
arXiv:2504.14048 [math.NT] HAL 05051874.

Schanuel property for elliptic and quasi--elliptic functions. Hardy-Ramanujan Journal 48 (2025), 77-101.
arXiv:2504.14041 [math.NT] HAL 05051871.

With Etienne Fouvry,
Number of integers represented by families of binary forms (II): binomial forms. Acta Arithmetica, 214 (2024), 271-287. Online First, April 8, 2024.
arXiv:2306.02462 [math.NT] (MR4772287)

With Etienne Fouvry,
Number of integers represented by families of binary forms (I). Acta Arithmetica, 209 (2023), 219-267.
DOI: 10.4064/aa220606-16-2.
arXiv: 2206.03733 [math.NT] (Zbl07768665) (MR4665259)

Lectures - Courses - Conferences - Videos

Les fichiers pdf ou ppt de mes exposés récents ou plus anciens sont téléchargeables.
You can download the pdf or ppt files of my recent or not so recent lectures and talks.

In English

Lattices.
Three courses, six exercises with their solutions and some references for the
CIMPA School: Arithmetic in Action: Number Theory and its Applications to Cryptography and Coding Theory, Universitas Gadjah Mada (UGM), Indonesia, July 2025.
update 2025

Representation of integers by families of binary forms.
update 2025

On the Brahmagupta-Fermat-Pell Equation.
update 2024
The video (July 23, 2020) is available on You Tube.

An introduction to the theory of finite fields (98 p.)
update 2024

On the Markoff equation x^2+y^2+z^2=3xyz;
update 2024

Two invariants related to two conjectures of Nagata.
update 2024
Link to the video Some variants of Seshadri's constant (October 12, 2020).

Circulant determinants and Clifford algebras.
update 2023

The square root of 2, the Golden ratio and the Fibonacci sequence.
update 2023
Videos on YouTube : July 20, 2020 and November 19, 2022.

Euler constant
update 2023

On the abc conjecture.
update 2023

Interpolation problems.
update 2023

Introduction to analytic number theory.
update 2023

Some of the most famous open problems in number theory.
update 2023

An Introduction to elliptic functions.
Exercises.
update 2022

Families of Diophantine equations.
update 2022

Transcendental Number Theory: recent results and open problems.
update 2022

Lidstone interpolation Four courses at The Institute of Mathematical Sciences (IMSc).
      Lecture 1: Friday, December 10 2021 15:30 - 16:45 link to the video
      Lecture 2: Saturday, December 11 2021 15:30 - 16:45 link to the video
      Lecture 3: Monday, December 13 2021 11:30 - 12:45 link to the video
      Lecture 4: Tuesday, December 14 2021 15:30 - 16:45 link to the video
      Slides on Lidstone interpolation - update 2021.

Indo-French Cooperation in Mathematics. History of Indo-French Scientific Partnership.
update 2021

Schanuel's Conjecture: algebraic independence of transcendental numbers.
update 2021

Irrationality and transcendence of values of special functions.
update 2021

Online course CIMPA on Interpolation.
   course 1, 48 pages, course 2, 49 pages, course 3, 50 pages, course 4, 65 pages.
   Link to the videos on You Tube (December 2020)
   Exercices Sheet 1, Corrections. Sheet 2, Corrections. Sheet 3, Corrections. Sheet 4, Corrections.
update 2021