In 1955-1963 I attended **Leningrad Middle School 170** (grades 1 - 8).

In 1963-1966 I was a student at the **Leningrad High School 239**.
This is a remarkable school, one of the best in Leningrad, with
specialization in Mathematics and Physics. See a wikipedia
article. I am most grateful to the
following three teachers:

Mirra Girshevna Katsnelson, history | Garry Borisovich Akhverdov, mathematics |
Victor Kirillovich Kobushkin, physics |

In 1966-1971 I was an (undergraduate) student at the **Faculty of
Mathematics and Mechanics (mat-mex), Leningrad State University.**

By the end of this period I prepared my first two research papers:

1. Links, two-fold branched coverings and braids;

2. Local knotting of submanifolds

(they were published in 1972 and 1973 in Matem. Sbornik). The latter was
my master thesis.

Then I became an aspirant
(a graduate student) at the **Department of High Geometry** of the same
Faculty.

Both during undergraduate and graduate study, my supervisor was
**Vladimir Abramovich Rokhlin**.

I graduated in 1973, a year before the time, in order to fill an assistant professor position at the same Department.

In 1974 I defended a dissertation **"Topological
invariants of branched coverings of manifolds with
boundary"**

for the degree **Candidate of Phys.-Mat. Sci. (Ph.D)** .

In 1983 I defended the second dissertation (a counter-part of
a habilitation),

**"Real algebraic
varieties with prescribed topological properties"**

for the degree of
**Doctor of Phys.-Mat. Sci** .

2015-12-16