CEREMADE (CENTRE DE RECHERCHE EN MATHÉMATIQUES DE LA DÉCISION. Past ICIAM President. FRANCE
CIMPA Executive Director
President of Korean Mathematical Society, School of Mathematics, Korea Institute for Advanced Studies (KIAS), SOUTH KOREA
Director, School of Mathematics, University of Nairobi, KENYA. (Representing East Africa )
President, Italian Mathematical Union.University of Rome “Tor Vergata”. ITALY
President of European Mathematical Society (EMS), Institute for Mathematics, Technical University of Berlin, Germany
President of IMU CDC, School of Mathematics, Tata Institute of Fundamental Research, Colaba, Mumbai, INDIA
President of the London Mathematical Society, University of Oxford , UK.
Former President of the Southeast Asian Mathematical Society in 2018-2019. Institute of Mathematics, University of the Philippines Diliman. Philippines.
President, Chineese Mathematical Society, School of Mathematical Sciences, University of Beijing, P.R.China.
President of the Finnish Mathematical Society in 2016-2020,
University of Helsinki, Finland
President of the International Science Council, Former President of the Academy of Science of South Africa,
University of Cape Town South Africa