Third round Marathon

Prof. Petar Boyvalenkov, MD, is a graduate of the High School of Natural Sciences and Mathematics in Dobrich. He graduated in 1989 from Sofia University, majoring in Mathematics at the Faculty of Mathematics and Informatics. Three years later he defended his dissertation "Limits for packaging in Euclidean spaces." Since 2004 he has been a Doctor of Mathematical Sciences. Since 1990 he has been working at the Bulgarian Academy of Sciences, where he has gone through all stages of development to the present - a professor at the Institute of Mathematics and Informatics of BAS, where in March 2021 he was elected director. Prof. Boyvalenkov has many years of teaching practice with reading courses at Sofia University "St. Kliment Ohridski", Southwestern University "Neofit Rilski", Plovdiv University "Paisii Hilendarski", New Bulgarian University, Purdue University, Fort Wayne in the USA and others. He has over 100 papers presented at conferences and seminars in more than 20 countries and over 100 publications in magazines and scientific journals. Since 2017 he has been Deputy Chairman of the Board of the Union of Bulgarian Mathematicians. During the period 2014-2018 he was the leader of the Bulgarian national team at the International Mathematics Olympiad. Between 2005 and 2019 he was a member of the National Commission of the Ministry of Education and Science where he was responsible for the organization of student Olympiads.

Veselina Karapeeva was born in 1976. She graduated with a degree in "Mathematics and Informatics" from "Paisii Hilendarski" University of Plovdiv. In 2003 she began teaching informatics at the Mathematics high school "Acad. Kiril Popov" in Plovdiv. Between November 2017 and December 2018 she executed the office of senior expert in professional education and training at the Regional directorate of education - Plovdiv. In December 2018 she was elected Principal of the Mathematics high school "Acad. Kiril Popov". Veselina Karapeeva is a member of the executive board of the Union of Bulgarian Mathematicians.