About the Authors

Henning Bruhn

Mathematisches Seminar

Universität Hamburg, Germany

bruhns[ta]math[td]uni-hamburg[td]de

http://www.math.uni-hamburg.de/home/bruhn/

Mathematisches Seminar

Universität Hamburg, Germany

bruhns[ta]math[td]uni-hamburg[td]de

http://www.math.uni-hamburg.de/home/bruhn/

**Henning Bruhn**has been a postdoc at Universität Hamburg since summer 2006. In 2005 he obtained his Ph.D. under the supervision of Reinhard Diestel. He spent the following year in Grenoble learning combinatorial optimisation and French. He likes rock climbing and tries to learn Japanese.

Jakub Černý

Department of Applied Mathematics,

Faculty of Mathematics and Physics

Charles University, Czech Republic

kuba[ta]kam[td]mff[td]cuni[td]cz

http://kam.mff.cuni.cz/~kuba/

Department of Applied Mathematics,

Faculty of Mathematics and Physics

Charles University, Czech Republic

kuba[ta]kam[td]mff[td]cuni[td]cz

http://kam.mff.cuni.cz/~kuba/

**Jakub Černý**is finishing his Ph.D. at the Department of Applied Mathematics of Charles University in Prague. His advisor is Pavel Valtr. He is interested in computational and discrete geometry and efficient algorithms in general. His hobbies are aikido, improvisational comedy theatre, outdoor activities.

Alexander Hall

Google Switzerland GmbH

Zurich, Switzerland

alex[ta]hall[td]gmail[td]com

Google Switzerland GmbH

Zurich, Switzerland

alex[ta]hall[td]gmail[td]com

**Alexander Hall**received a Master's degree (“Diplom”) in Computer Science at the Technische Universität München in 1998. In December 2003 he completed his doctoral studies in the group of Thomas Erlebach at the ETH Zürich and received a Ph.D. for his thesis “Scheduling and Flow-Related Problems in Networks.” After being a post-doc at ETH Zürich and UC Berkeley, he is now with Google in Zurich.

Petr Kolman

Department of Applied Mathematics

Faculty of Mathematics and Physics

Charles University, Czech Republic

kolman[ta]kam[td]mff[td]cuni[td]cz

http://kam.mff.cuni.cz/~kolman/

Department of Applied Mathematics

Faculty of Mathematics and Physics

Charles University, Czech Republic

kolman[ta]kam[td]mff[td]cuni[td]cz

http://kam.mff.cuni.cz/~kolman/

**Petr Kolman**is an Assistant Professor at Charles University in Prague, Czech Republic. After obtaining his Ph.D., he spent a year at the Heinz Nixdorf Institut at the University of Paderborn, Germany and a year at the University of California, Riverside.

Jiří Sgall

Institute of Mathematics, AS ČR

Prague, Czech Republic

sgall[ta]math[td]cas[td]cz

http://www.math.cas.cz/~sgall/

Institute of Mathematics, AS ČR

Prague, Czech Republic

sgall[ta]math[td]cas[td]cz

http://www.math.cas.cz/~sgall/

**Jiří Sgall**grew up in Prague, Czechoslovakia, where he received his RNDr. degree (equivalent of Master's) at Charles University under supervision of Antonín Sochor. Then he went to Carnegie Mellon University and received his Ph.D. under the supervision of Steven Rudich. After that he went back to Prague, Czech Republic, where he is now a senior researcher at the Institute of Mathematics of the Academy of Sciences of the Czech Republic. His main research interests are online and approximation algorithms for scheduling and other combinatorial problems. He also worked in communication complexity and proof complexity.