Sylvain Perifel “Maître de conférences” (senior lecturer) in computer science at université de Paris (ex-Paris Diderot – Paris 7) and IRIF, member of the teams Algorithms and complexity and Automata and applications. Research domains: algorithmic complexity, computation of polynomials, etc. To contact me Office 4017 at IRIF, 4th floor of Sophie Germain building. Postal address: IRIF Université de Paris Bâtiment Sophie Germain, case 7014 8 Place Aurélie Nemours 75205 Paris Cedex 13 Tel: 01 57 27 92 29 E-mail: sylvain (dot) perifel [at] irif (dot) fr Book on algorithmic complexity My book (in French) on algorithmic complexity is freely available online in pdf here.