Postdoctoral Fellowship in Discrete Mathematics People with a recent PhD in mathematics or computer science are sought to conduct research in the group ConCoCO (Concordia Computational Combinatorial Optimization), supported by NSERC and the Canada Research Chairs program, in the academic year 2013--2014. The position, at Concordia University in Montreal, carries an annual salary of $45,000 and is renewable for an additional year. Highest priority will be given to applicants with demonstrated research expertise in the areas of finite metric spaces or graph theory: the selected candidate will be expected to work on problems concerning extensions of the De Bruijn-Erdos theorem to finite metric spaces described in http://arxiv.org/abs/1112.0376 Applicants should email (1) their CV, (2) a description of their current research interests and future research plans, and (3) the names and contact information of at least three references to chvatal@cse.concordia.ca Contact: Vasek Chvatal Concordia University Montreal, Quebec H3H 1G5 Canada