Groupes, courbes et croissance
  - Synth\`ese des travaux pr\'esent\'es en vue d'une Habilitation \`a Diriger des Recherches   - Synthesis of works presented towards the Habilitation degree   This is a summary (in French) of my work in number theory, group theory and combinatorics in the last eight years. 
H. A. Helfgott
math.NT math.CO math.GR