1. General course on linear algebra (1987-2003). 2. Galois theory (1988-1992). 3. Course of elementary mathematics (1988-1989). 4. Linear programming (1989-1990). 5. Number theory (1990-1992). 6. Reflection groups (1992-1993). 7. Combinatorics and olympiad problems (1993-1995). 8. Combinatorial group theory (1993-1995). 9. Group theory (1996-2001). 10. Modern algebra and presentations of groups (2001-2002). 11. Lie algebras and Lie groups (from 2002 up to nowadays). 12. Geometric group theory (from 1990 up to nowadays). 13. Algorithmic number theory and elements of cryptography (2005). 14. Analytic geometry, algebra and number theory (2005).