Short Biographies

Martin Andler

Martin Andler teaches mathematics at the University of Versailles Saint-Quentin; he has held visiting positions at MIT and Rutgers University. His research focuses on two main areas: representation theory of Lie groups, and the history of 20th century mathematics. He is the chairman of Animath, a French organisation promoting mathematics for kids.

Mario Bonk

Mario Bonk is a professor of mathematics at the University of California at Los Angeles. He is mainly interested in the interactions between analysis and geometry, particularly in quasiconformal aspects. He is a firm believer that mathematics should be communicated, which he does extremely well. When he's not doing math, he relaxes while training for marathons.

John H. Conway

John Conway is one of the most prolific mathematicians. He is probably best known for the "Game of Life," which he invented, as well as for "combinatorial game theory" that he developed (partly in collaboration): a very natural and simple definition that lead to a class of games with incredibly rich structure, containing the now-famous "surreal numbers." He has made substantial contributions to many other areas of mathematics, for instance group theory. He greatly enjoys spending time and discussing with students.

Dmitry Fuchs

Dmitry Fuchs is a professor of mathematics at University of California, Davis. He works in topology and algebra, with occasional excursions to other fields, most lately, closed geodesics on Platonic solids and closed billiard trajectories in regular polygons; this research was based on computer experimentation. He authored and co-authored several books, including "Mathematical Omnibus", a collection of 30 lectures on classic mathematics, which was recently translated into German and Russian.

Étienne Ghys

Étienne Ghys is a French mathematician. His research focuses mainly on geometry and dynamical systems. He also expresses much interest in the historical development of mathematical ideas, especially the contribution of Henri Poincaré. He co-authored the computer graphics mathematical movie Dimensions: A walk through mathematics. He is is currently a CNRS "directeur de recherche" at the École normale supérieurein Lyon. He is also a member of the French Academy of Sciences.

John H. Hubbard

John Hubbard is a professor of mathematics at Cornell University, NY, and the Université de Provence in Marseille, France. Together with Adrien Douady, he is one of the pioneers of holomorphic dynamics; together, they developed the groundbreaking theory of complex dynamics and especially the Mandelbrot set. He has very broad interests in mathematics, and he won several awards for his inspiring lecturing style.

Victor Kleptsyn

Victor Kleptsyn is a researcher at CNRS, in the Institute of Mathematical Research of Rennes. His working themes are mainly dynamical systems and geometry. His belief is that most arguments, theorems, and proofs in the mathematics should be visual, and easily explicable, at least on the "why should it be true" level of explanation.

Dierk Schleicher

Dierk Schleicher is professor of mathematics at Jacobs University Bremen. He obtained his PhD at Cornell University, NY, and held visiting positions in Berkeley, Stony Brook, Paris, Toronto, and München. His main research interests are in dynamical systems and chaos, especially in holomorphic dynamics and the Mandelbrot set, and the dynamics of Newton's root-finding method. He was one of the main organizers of the 50th International Mathematical Olympiad (IMO) 2009 in Bremen.

Sergei Tabachnikov

Sergei Tabachnikov is a professor of mathematics at Penn State University. He works in geometry, topology, and dynamics - one of his favorite topics is mathematical billiards. He also likes to combine theoretical research with computer experiments. He (co)authored several books including "Mathematical Omnibus," a collection of 30 lectures on classic mathematics. Sergei is the Director of the semester-long MASS (Mathematics Advanced Study Semesters) Program at Penn State.

Tadashi Tokieda

Tadashi Tokieda was born in Japan and educated in France, he obtained his Ph. D. at Princeton University; he works at the University of Cambridge. He is interested in physics, particularly related to toys. Scholar and polyglot (in addition to Japanese, French, and English, he knows Greek, Latin, classical Chinese, Finnish, Spanish, and Russian), Tadashi is specialized in the popularization of mathematics and physics and is an outstanding communicator.

Oleg Viro

Oleg Viro works in low-dimensional topology (knot theory) and real algebraic geometry. Oleg was educated in St. Petersburg (then Leningrad), worked in USA and Sweden; currently he is a professor of mathematics at State University of New York at Stony Brook. He firmly believes in unity of mathematics, see his lecture on the subject.

Wendelin Werner

Wendelin Werner is a probabilist with a unique way to explain difficult themes in an elementary manner. He is currently a professor at the University of Paris-Sud in Orsay and part-time at the École Normale Supérieure. His most famous work revolves around planar models from statistical physics, for which he received a Fields medal in 2006.

Don Zagier

Don Zagier is an American mathematician whose main area of work is number theory. In 1976, aged only 24, he became Germany's youngest professor. Among many other things, he is known for discovering a short and elementary proof of Fermat's theorem on sums of two squares: it consists of a single sentence. He is currently one of the directors of the Max Planck Institute for Mathematics in Bonn, Germany, and a professor at the Collège de France in Paris, France.

Günter M. Ziegler

Günter M. Ziegler is a professor of mathematics at Freie Universität, Berlin. His work connects discrete mathematics, geometry, topology, and optimization. He received numerous prizes, among them a 2001 Leibniz Prize for his research and the Communicator Award in the year 2008, when he was a co-organizer of the "Year of Mathematics" in Germany. His writing includes "Proofs from THE BOOK," which has been published in 14 different languages by now.