Doychin Tolev

Ph.D., Faculty of Mathematics and Mechanics, Moscow “M. Lomonosov” University, Moscow, Russia, 1986 – 1990.

Ph.D. Thesis: Diophantine inequalities with prime numbers, 1990. Scientific advisor: Professor A. A. Karatsuba.

B.A. and M.Sc., Faculty of Mathematics and Informatics, Sofia University “Kl. Ohridski”, Sofia, Bulgaria, 1979 – 1984.

Elementary and analytic number theory.

From 2002 to 2006: Associate Professor, Doctor of Sciences, Faculty of Mathematics and Informatics, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria.

From 1996 to 2002: Associate Professor, Ph.D., Faculty of Mathematics and Informatics, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria.

From 1990 to 1996: Assistant Professor, Ph.D., Faculty of Mathematics and Informatics, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria.

From 1984 to 1986: Software developer, Main Computer Centre, Plovdiv.

1) Special courses:

Faculty of Mathematics and Informatics, Plovdiv University “Paisij Hilendarski”, Bulgaria 
From 1991 to present: 
Introduction to the theory of Riemann’s zeta–function, 
Introduction to analytic number theory, 
Introduction to algebraic number theory, 
Elementary methods in analytic number theory, 
The method of exponential sums in number theory,
Introduction to the circle method, 
Inequalities, 
Problems from mathematical competitions.

Faculty of Mathematics and Informatics, Sofia University “Kl. Ohridski”, Bulgaria; 
1990/91, 2003 - 2006:
Distribution of prime numbers.
Introduction to the theory of Riemann’s zeta–function. 
Additive number theory.
Elementary methods in analytic number theory.

Mathematical Institute, Oxford, England; 
Michaelmas Term, 2003: 
Introduction to the circle method.

2) Standard courses:

Faculty of Mathematics and Informatics, Plovdiv University “Paisij Hilendarski”, Bulgaria 
From 1991 to present:
Calculus I, II, III, IV and Functional Analysis.

Funded projects and fellowships:

1998, 2000, 2003: Mathematical Institute, Oxford, England, (Royal Society Fellowship).

2003: Institute of Mathematics, University of Tsukuba, Japan (JSPS Fellowship).

2002: Participation in the Special activity in analytic number theory, Max Planck Institute for Mathematics, Bonn, Germany.

1997: Department of Mathematics, Naples University “Federico II”, Naples, Italy.

1996: Institute of Mathematics, Hungarian Academy of Sciences, Budapest, Hungary.

1994, 1997: Faculty of Mathematics and Mechanics, Moscow “M.Lomonosov” University, Moscow, Russia.

1992 – 1993: Department of Mathematics, University of Salerno, Salerno, Italy (CNR Fellowship).

1992: Institute of Mathematics, Gottingen, Germany.

From 2005 to present: Participation in the national project Mathematical Physics and Number Theory financed by the Ministry of Science and Education, Bulgaria

From 1997 to present: Chair of several projects, entitled Additive problems in number theory, Plovdiv University Scientific Fund, Bulgaria.

1994 – 1997: Chair of the project Additive problems in number theory, Ministry of Science and Education, Bulgaria.

October 2005: Fundamental achievements of prime number theory at the begining of 21st century, Institute of Mathematics, Bulgarian Academy of Science, Sofia, Bulgaria.

April 2004: Goldbach’s problem – past, present and future, Spring conference of the Union of Bulgarian Mathematicians, Borovets, Bulgaria.

December 2003: On the exponential sum over square–free numbers, Number Theory Seminar, Mathematical Institute of Oxford University, Oxford, England.

May 2003: Representations of integers as sums of squares of primes and almost–primes, Analytic Number Theory Seminar, Meiji–Gakuin University, Tokyo, Japan.

November 1998: Additive problems with prime numbers of special type, Mathematical Institute of Oxford University, Oxford, England.

November 1998: Additive problems with prime numbers of special type, Department of Mathematics, Cardiff Unversity, Cardiff, Wales.

May 1996: A result of Bombieri–Vinogradov’s type for prime numbers from a thin set, Institute of Mathematics, Hungarian Academy of Sciences, Budapest, Hungary.

May 1993: Diophantine inequalities with prime numbers, Department of Mathematics, Faculty of Natural Sciences and Mathematics, University of Vienna, Austria.

May 1993: On the method of I.M.Vinogradov for estimation of exponential sums, Department of Mathematics, University of Lausanne, Lausanne, Switzerland.