About Us

The Department of Differential Equations at the Faculty of Mathematics and Informatics,  Sofia University “St. Kliment Ohridski” was founded in 1988. It is one of the successors  of the section  of  Differential Equations of the United Center of Mathematics and Mechanics (UCMM). Earlier, Differential Equations were taught as courses at the Faculty of Mathematics within the Department of Higher Analysis.

At the end of 1970 the Faculty of Mathematics at Sofia University and the Mathematical  Institute of Bulgarian Academy of Sciences merged into United Center of Mathematics and Mechanics (UCMM). The first head of the section  Differential Equations in UCMM was Prof. Todor Genchev 1971-1973, followed by Prof. Racho Denchev 1973-1979 (Dean of the Faculty of Mathematics and Mechanics 1979-1983). UCMM ceased its existence in 1988. (see History of IMI, History of FMI ).

Throughout the years the heads of the department were: Prof. Todor Genchev 1988-1992 (he produced a number of textbooks for the courses in ODE and PDE), Prof. Emil Horozov 1992-2000 and 2006-2010 (Dean of the Faculty of Mathematics and Informatics 1995-1999),  Assoc. Prof. Angel Zhivkov 2000-2006 and 2010-2018.

The Department provides the courses in Ordinary and Partial Differential Equations at the Faculty of Mathematics and Informatics, as well some basic courses in Mathematics at the Faculties of Physics and Biology of Sofia University.

The Department of Differential Equations offers a variety of elective courses for BSc, MSc and PhD students, which develop the ideas and techniques from the Bachelors' courses of differential  equations, but also those that show the interaction of the theory of differential equations with Algebra, Analysis, Geometry, Mechanics and Physics and the applications, related in general to mathematical natural science.

Members of the Department have created and organized the following Master Degree programs  for the majors in Mathematics and Applied Mathematics:

  • Dynamical Systems and Number Theory, supervisor Assoc. Prof. Angel Zhivkov
  • Equations of Mathematical Physics, supervisor Assoc. Prof. Maria Karatopraklieva
  • Equations of Mathematical Physics and Applications, supervisor Assoc. Prof. Todor Popov

There is also a PhD program  in Differential Equations.

Some alumni of the Department have followed successful careers as researchers in reputable universities in France, Italy, Sweden, USA, Canada, Japan, as well as in Bulgaria.