Dessin par Hélène
Michel Waldschmidt

Pham Minh Hoang

Pham Minh Hoang, mathématicien ayant la double nationalité française et vietnamienne, arrêté à Hô Chi Minh-Ville le 13 août 2010, a été condamné le 10 août 2011 à trois ans de prison. Lors de son procès en appel le 29 novembre 2011, sa condamnation a été ramenée à 17 mois de prison et trois ans d'assignation à résidence. Il a quitté la prison le 13 janvier 2012. Il est l'un des 41 écrivains de 19 pays qui ont reçu le Prix Hellman/Hammett 2012 pour leur engagement au service de la libre expression et pour leur courage face à la persécution. Il a depuis créé le Virtual Laboratory of Applied Mathematics.
Peu avant la fin de son assignation à résidence, il a été victime de provocations: voir RSF DÉNONCE LES MENACES À L’ENCONTRE DU BLOGUEUR PHAM MINH HOANG ET DE SA FAMILLE et Vietnamese Authorities Step Up Harassment of Dissident Rights Lawyer. Heureusement, il a été finalement libéré le 13 janvier 2015.

Pham Minh Hoang, a French and Vietnamese mathematician, has been arrested at Hô Chi Minh-City on August 13, 2010. He was sentenced 3 years of prison on August 10, 2011. On November 29, 2011, the sentence was reduced to 17 months of jail and 3 years of house arrest. He came out of jail on January 13, 2012. Pham Minh Hoang is among the 41 writers from 19 countries who received the 2012 Hellman/Hammett grants for their commitment to free expression and their courage in the face of persecution. Recently he initiated the Virtual Laboratory of Applied Mathematics.
Recently he has been harassed: see Vietnamese Authorities Step Up Harassment of Dissident Rights Lawyer and RSF DÉNONCE LES MENACES À L’ENCONTRE DU BLOGUEUR PHAM MINH HOANG ET DE SA FAMILLE. Fortunately he is now free since January 13, 2015.

Agenda

Archives from January 2009 till now.

Prochaînes missions - Coming soon

April 20 - May 8, 2015. Phnom Penh (Cambodge)
    Royal University of Phnom Penh (URPP - Université Royale de Phnom Penh).
        Master of Science in Mathematics, Course: Algebra and Geometry

18 - 29 mai 2015: Oujda (Maroc)
    École de recherche CIMPA-Oujda Théorie des Nombres et ses Applications. Cours: Équations diophantiennes et leurs applications.

June 16-30, India.
    June 16-20, 2015: Advanced Instructional Schools (AIS) Analytic Number Theory, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar.
    AIS Analytic Number Theory (2015) Course on Transcendental numbers: introduction to some of the main methods and to some of the open problems.

July 6-11, 2015, Debrecen (Hongrie)
    July 6-10, 2015: 29èmes Journées Arithmétiques JA 2015
    July 10-11, 2015: Symposium on the honour of the 75th birthday of Professor Kálmán Győry (Debrecen University Symposium).

July 13 - July 17, 2015: Aarhus, Denmark
    Conference "Diophantine Approximation and Related Topics".

August 31 - September 8, 2015, Ho Chi Minh City (Vietnam)
    Department of Computer Science at VHUHCM Ho Chi Minh City University of Science,
    SEAMS School Number Theory and Applications in Cryptography and Coding Theory. Course: Introduction to Coding Theory.

September 14-20, 2015, Ulaanbaatar (Mongolia)
    School of Mathematic and Computer Science, National University of Mongolia. Org.: Bayarmagnai Gombodorj (NUM, Mongolia). Course on Lattices.

October 19 - November 6, 2015, Nepal

November 7-9, 2015. Myanmar.
    The Eighth International Conference on Science and Mathematics Education in Developing Countries (8th ICSMEDC), Yangon University.
    (website of the 7th ICSMEDC in Mandalay, 2014.)

November 17 - December 5, 2015, Lahore (Pakistan)
    Abdus Salam International Center for Mathematics (ASICM).

December 13-20, 2015, India
    The Institute of Mathematical Sciences (IMSc), Chennai.

January 7 - February 6, 2016. India
    January 7-29, The Institute of Mathematical Sciences (IMSc), Chennai.
       January 11-24: Indo-French Conference.
    January 30 - February 6, Harish-Chandra Research Institute (HRI), Allahabad.

15 - 26 février 2016: Nouakchott (Mauritanie)
    Université des Sciences, de Technologie et de Médecine de Nouakchott École de recherche CIMPA-Mauritanie: Algorithmique en Théorie des Nombres et Cryptographie.
    Cours: Arithmétique modulaire, fractions continues, attaques basées sur les fractions continues, corps finis.

April 10-16, 2016. Oberwolfach.
    Diophantische Approximationen. Organisers Yann Bugeaud (Strasbourg), Philipp Habegger (Darmstadt), Umberto Zannier (Pisa).

May 9-27, 2016. Phnom Penh (Cambodge)
    Royal University of Phnom Penh (URPP - Université Royale de Phnom Penh).
        Master of Science in Mathematics, Course: Number theory with an introduction to cryptography.

June 13-17, 2016, Marina di San Gregorio, Patù (Lecce), Italy
    Leuca2016

Research paper (submitted) - Article de recherche (soumis)

With Claude Levesque,
    Familles d’équations de Thue associées à un sous-groupe de rang 1 d'unités totalement réelles d'un corps de nombres. Submitted to CRM collection "Contemporary Mathematics", AMS.

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

With Claude Levesque,
    A family of Thue equations involving powers of units of the simplest cubic fields. (to appear in the Journal de théorie des nombres de Bordeaux) 27 p.
    Unpublished expanded version 31p.

With Claude Levesque,
    Solving simultaneously Thue equations in the almost totally imaginary case. Proceedings of the International Meeting on Number Theory HRI 2011, in honor of R. Balasubramanian, Lecture Notes Series in Ramanujan Mathematical Society (to appear).

With K. Senthil Kumar and R. Thangadurai,
    Liouville numbers, Liouville sets and Liouville fields, Proceedings of the American Mathematical Society, to appear.
    arXiv:1312.7151 [math.NT].

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

With Claude Levesque,
    Solving effectively some families of Thue Diophantine equations. Moscow Journal of Combinatorics and Number Theory, 3 3-4 (2013), 118-144.
    arXiv:1312.7205 [math.NT].

With K. Senthil Kumar and R. Thangadurai,
    Liouville Numbers and Schanuel's Conjecture, Archiv der Mathematik, January 2014, Volume 102, Issue 1, pp 59-70. DOI 10.1007/s00013-013-0606-0
    arXiv:1312.7154 [math.NT].

With Shigeru Kanemitsu,
    Matrices of finite abelian groups, Finite Fourier Transform and codes. 17 p. (pdf 261 Ko).
    "Arithmetic in Shangrila"—Proc. the 6th China-Japan Sem. Number Theory held in Shanghai Jiao Tong University, August 15-17, 2011, ed. S. Kanemitsu, H.-Z. Li, and J.-Y. Liu. World Scientific Publishing Co, Series on Number Theory and its application, vol. 8 (2013), 90-106.
    arXiv:1301.1248 [math.NT].

With Claude Levesque,
    Families of cubic Thue equations with effective bounds for the solutions. J.M. Borwein et al. (eds.), Number Theory and Related Fields: In Memory of Alf van der Poorten, Springer Proceedings in Mathematics & Statistics 43 (2013) 229-243.
    arXiv:1312.7204 [math.NT].

With Claude Levesque,
    Approximation of an algebraic number by products of rational numbers and units, 11 p. (pdf: 300 Ko).
    Journal of the Australian Mathematical Society, Special Issue dedicated to Alf van der Poorten, volume 93, issue 1-2, pp. 121-131. Published online: 07 February 2013.
    arXiv:1312.7203 [math.NT].

Recent surveys - articles de synthèse récents

Raconte moi … une période.. Gazette des Mathématiciens, Société Mathématique de France, No 143 Janvier 2015, 75-78. 5p.

On the abc conjecture and some of its consequences, Mathematics in 21st Century, 6th World Conference, Lahore, March 2013, (P. Cartier, A.D.R. Choudary, M. Waldschmidt Editors), Springer Proceedings in Mathematics & Statistics 98 (2015), 211-230.

Diophantine approximation with applications to dynamical systems.
    Proceedings of the International Conference on Pure and Applied Mathematics ICPAM–LAE 2013, South Pacific Journal of Pure and Applied Mathematics, vol. 1, No 2 (2014), 1-18.

Le théorème de Green-Tao et autres secrets des nombres premiers.
    Mathématiques, L'explosion continue, FSMP (Fondation Sciences Mathématiques de Paris), SFDS (Société Française de Statistiques), SMAI (Société de Mathématiques Appliquées et Industrielles), SMF (Société Mathématique de France), 2013, pages 31-35.

From highly composite numbers to transcendental number theory, 13 p. (pdf: 295 Ko)
    Proceedings of the International Conference The Legacy of Srinivasa Ramanujan, University of Delhi, Dec. 2012.
    Lecture Notes Series of the Ramanujan Mathematical Society, India, No 20 (2013), 387–397.

Lectures - Courses - Conferences

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.

Recent additions - Nouveautés

Continued fractions :introduction and applications. , pdf screen: 5,6 Mo, 79 p.     pdf print: 5,6 Mo, 20 p.
    Lectures given in December 2014 at the ICPAM-GOROKA 2014; International Conference on Pure and Applied Mathematics.
    and at the Mathematic Seminar of the Indian Institute of Science, Education and Research IISER, Pune, India.

On Some recent results on Diophantine equations: a survey.     screen pdf: 16.3 Mo, 88 p.     print pdf: 16.3 Mo, 22 p.
    Colloquium lecture, School of Mathematics, Tata Institute of Fundamental Research (TIFR), Mumbai, November 2014.

Multiple zeta values     screen pdf: 2.3 Mo, 72 p.     print pdf: 2.3 Mo, 18 p.
    Colloquium lecture, Department of Mathematics, Indian Institute of Technology (IIT Bombay) November 2014.

On the abc conjecture and some of its consequences     screen pdf: 13,6 Mo, 89 p.     print pdf: 13,7 Mo, 23 p.
    Seminar lecture, Department of Mathematics, Indian Institute of Technology (IIT Bombay) Nov 26, 2014.

A survey on Multiple Zeta Values.     screen pdf: 2.4 Mo, 72 p.     print pdf: 2.4 Mo, 18 p.
    Université Laval, Québec (Canada); congrès Québec-Maine, 27-28 septembre 2014.

Depliant EMS-CDC, Poster EMS-CDC, Beamer presentation EMS-CDC, Beamer presentation for printing
        "Mathematics in Emerging Nations: Achievements and Opportunities" (MENAO). August 2014, Seoul, (Republic of Korea).

Introduction à la cryptographie. fichier powerpoint, 3,4 Mo, 89 pages fichier pdf, 6.2 Mo, 23 pages.
    Université Félix Houphouët-Boigny, Cocody, Abidjan, Côte d’Ivoire. Journée Arithmétique, 24 juillet 2014.

La constante d'Euler est-elle un nombre rationnel, un nombre algébrique irrationnel ou bien un nombre transcendant? screen pdf: 4,7 Mo, 22 p.     print pdf: 4,7 Mo, 131 p.
    Université de Lomé, Togo, 21 juillet 2014.

An elementary introduction to error correcting codes. powerpoint file (161 p., 4.3 Mo)   pdf file (41 p., 5.5 Mo).
    The Institute of Mathematics and Physical Sciences (IMSP), Dangbo (Bénin)
    Algebraic Number Theory and Applications, CIMPA-ICTP-BENIN Ecole de recherche organisée en commun avec l’ICTP, 17 juillet 2014.

A family of Thue equations involving powers of units of the simplest cubic fields.     screen pdf: 11.1 Mo, 73 p.     print pdf: 11.1 Mo, 11 p.
    13th Conference of the Canadian Number Theory Association (CNTA XIII), Carleton University (Ottawa). June 16-20, 2014.

Three algebras arising from Multiple Zeta Values.     screen pdf: 2.3 Mo, 70 p.     print pdf: 2.3 Mo, 18 p.
    Université d'Ottawa, Département de mathématiques et de statistique
    73rd Algebra Day CRM - University of Ottawa Distinguished Lecture, May 27, 2014.

Schanuel's Conjecture: algebraic independence of transcendental numbers. screen pdf: 21.7 Mo, 68 p.     print pdf: 21.7 Mo, 17 p.
    Ennio De Giorgi Mathematical Research Center, Pisa (Italy). Scuola Normale Superiore, Colloquium De Giorgi May 6, 2014     Extended abstract: 10 p. Colloquium De Giorgi 2013 and 2014, Ed. U. Zannier; Edizioni della Normale 2015, 129--137.

Diophantine approximation with applications to dynamical systems.     screen pdf: 1.2 Mo, 103 p.     print pdf: 1.2 Mo, 14 p.
    Lecture given at the International Conference on Pure and Applied Mathematics ICPAM–LAE 2013, PNG University of Technology, LAE (Papua New Guinea) on November 28, 2013.

On the Brahmagupta-Fermat-Pell Equation         screen pdf: 3.2 Mo, 188 p.   print pdf: 3.2 Mo, 21 p.
    Lecture given at the 14th International Pure Mathematics Conference 2013 (14 IPMC 2013), Preston University, Islamabad (Pakistan), on August 25, 2013.

Transcendental Number Theory: recent results and open problems.     screen pdf 4.6 Mo, 90p.   print pdf 4.5 Mo, 23p.
    Coding and number theory seminar, Institute of Mathematics of the University of the Phiippines, July 15, 2013.

Cards, hats, coins and codes. powerpoint file (161 p., 4.3 Mo)   pdf file (41 p., 5.6 Mo). Institute of Mathematics of the University of the Phiippines, July 18, 2013.

Sur les équations diophantiennes: du vieux et du neuf.     screen pdf: 4.2 Mo, 91 p.     print pdf: 4.2 Mo, 13 p.
    Département de mathématiques et de statistique, Université Laval, Québec (Canada), 14 juin 2013.

Diophantine equations, old and new.     screen pdf: 4.2 Mo, 92 p.     print pdf: 4.2 Mo, 13 p.
    EMS/DMF Joint Weekend, Danish Mathematical Society (DMF)'s 140 years anniversary, European Mathematical Society (EMS), Aarhus (Denmark), April 5, 2013.

Solving families of Diophantine equations. extended abstract, 2p., 200 Ko
    Lecture given, in the Abdus Salam School of Mathematical Sciences (ASSMS) Lahore (Pakistan), in the Workshop on Number Theory and Related Topics, organized by the National University of Computer & Emerging Sciences [NUCES], Peshawar on March 11, 2013.