Dušan Djukić is a PhD student of mathematics at the University of Toronto, at the field of number theory. He graduated from University of Belgrade in Serbia and Montenegro (2003).

During high school he took part at three IMOs (1997: silver, 1998: silver, 1999: gold) and two Balkan MOs (1997: bronze, 1998: gold). He made a number of olympiad-type problems, such as All-Russian MO 2001 9-10 #8 and Balkan MO 2005 #3 and four problems shortlisted for the IMOs 2002-05. He was the author of the problems 2 and 6 from the IMO06.

He provides most of the problems and feedback for this site (and spoils the design from time to time).

e-mail: dusan(dot)djukic(at)utoronto(dot)ca

Vladimir Janković is an associate professor at the University of Belgrade. His fields of study are numerical maths and optimization.

He was awarded two silver medals at the IMOs 1969-70, and later on took part at several IMOs as the team leader of Yugoslavia. He was the president of the problem selection comitee at the IMO77. He is a long-time lecturer at preparation of the olympic teams of Yugoslavia (S&M) and a co-author of a number of books on olympiad and advanced maths in Serbian language. His book "The IX and XIX IMO" can be regarded as the first step towards "The IMO Compendium".

Thanks to him, who was storing old IMO shortlists and longlists for decades, these precious materials are not lost. These efforts ultimately made "The IMO Compendium" possible.

e-mail: vjankovic(at)matf(dot)bg(dot)ac(dot)yu

Ivan Matić is a PhD student of mathematics at the University of California, Berkeley, at the field of mathematical analysis. He graduated from University of Belgrade in Serbia and Montenegro (2002).

During high school he won a silver medal at the IMO 1999 and numbered awards at competitions in the country.

He is the main moderator and programmer of this site.

e-mail: matic(at)math(dot)berkeley(dot)edu

Nikola Petrović is a graduate student at the Physics Institute in Belgrade, at the field of quantum mechanics, but is going to be in Qatar until June 2006. He graduated from Massachusetts Institute of Technology in 2003.

During high school he took part at three IMOs (1997: silver, 1998: silver, 1999: bronze) and two Balkan MOs (1997: silver, 1998: silver). Now he is actively involved in math competitions and is an author of a number of problems at competitions in Serbia and Montenegro.

e-mail: nikola(dot)petrovic(at)qatar(dot)tamu(dot)edu