文档介绍：About the Authors
Titu Andreescu received his . from the West University of Timisoara, Ro-
mania. The topic of his dissertation was “Research on Diophantine Analysis and
Applications.” Professor Andreescu currently teaches at The University of Texas
at Dallas. He is past chairman of the USA Mathematical Olympiad, served as di-
rector of the MAA American petitions (1998–2003), coach of
the USA International Mathematical Olympiad Team (IMO) for 10 years (1993–
2002), director of the Mathematical Olympiad Summer Program (1995–2002),
and leader of the USA IMO Team (1995–2002). In 2002 Titu was elected member
of the IMO Advisory Board, the governing body of the world’s most prestigious
petition. Titu co-founded in 2006 and continues as director of
the AwesomeMath Summer Program (AMSP). He received the Edyth May Sliffe
Award for Distinguished High School Mathematics Teaching from the MAA in
1994 and a “Certificate of Appreciation” from the president of the MAA in 1995
for his outstanding service as coach of the Mathematical Olympiad Summer Pro-
gram in preparing the US team for its perfect performance in Hong Kong at the
1994 IMO. Titu’s contributions to numerous textbooks and problem books are
recognized worldwide.
Dorin Andrica received his in 1992 from “Babes¸-Bolyai” University in
Cluj-Napoca, Romania; his thesis treated critical points and applications to the
geometry of differentiable submanifolds. Professor Andrica has been chairman of
the Department of Geometry at “Babes¸-Bolyai” since 1995. He has written and
contributed to numerous mathematics textbooks, problem books, articles and sci-
entific papers at various levels. He is an invited lecturer at university conferences
around the world: Austria, Bulgaria, Czech Republic, Egypt, France, Germany,
Greece, Italy, herlands, Portugal, Serbia, Turkey, and the USA. Dorin is
a member of the mittee for the Mathematics Olympiad and is a
member on the editorial boards of several internati