37 Vavilova St. Moscow 117312, Russia E-mail: grebien@ap.siedlce.pl greben@ccas.ru |

Head of Nonlinear Analysis Department of the Computing Centre of the Russian
Academy of Sciences

Head of Analysis Department of the University of Podlasie Ul. Orlicz-Dreszera
19/21

08-110 Siedlce, Poland

E-mail: okm@wsrp.sieclce.pl

**1. Born in: **Slobozia Mare, Ismail county, Romania, on 20 January
1932

**2. Studies:**

Romanian high school: Cahul, Republic of Moldova, 1949;

MSc: Faculty of Mechanics and Mathematics, Department of Astronomy

Lomonosov University, Moscow, 1954;

PhD: Faculty of Mechanics and Mathematics, Department of Astronomy

Lomonosov University, Moscow, 1957

**3. Left Romania in:**

After the political events of 1940 and 1944,

I became citizen of the USSR. I left Bassarabia (Republic of Moldova) in
1949 to continue my studies in Moscow.

**4. Some personal data:**

I married Valentina Matov (who is working since 1958 in the Section of Astrometry
of the "Sternberg" Institute, Moscow) in 1958. I have three

sons: Andrei, Alexandru, and Victor, who graduated from the "Lomonosov" University
in Moscow (Andrei - the Faculty of Geology; the other two -

the Faculty of Mechanics and Mathematics, Department of Mathematics).

**5. Relatives still living in Romania?**

No. My father, Alexandru Grebenicov (1898-1941), born and dead at Cahul, was
an orthodox priest. My mother, Dana Grebenicov (1899-1966), was born

in Dobrodja, near Galati, and dead in Kishinew. She graduated from the Normal
School of Galati approximately in 1916-1918, and worked all her

life in Bassarabia. She was a school-mistress for 42 years.

**6. The most important works:**

I published 22 monographs and more that 200 scientific papers.

My researches cover the domain of the analytic and qualitative problems of
celestial mechanics and applied mathematics. More concretely: the generalized
problem of two fixed centres, and the asymptotic theory of multi-frequency
(resonant) O.D.E., which is a constructive continuation of Bogolyubov - Krylov
theory. These equations are the basic equations in many domains, as: celestial
mechanics, cosmic geodesy, nuclear physics, gyroscopy, etc.

**Some monographs:**

E. A. Grebenikov, Yu. A. Ryabov: "New Qualitative Methods of Celestial Mechanics", Nauka, Moscow, 1971, 432 p. (Russian).

V. G. Abalakin, E. P. Aksyonov, E. A. Grebenikov, V. G. Dyomin, Yu. A. Ryabov: "Handbook of Celestial Mechanics and Astrodynamics" 2nd edition, Nauka, Moscow, 1971, 854 p. (Russian).

E. A. Grebenikov, Yu. A. Ryabov: "Resonances and Small Divisors in Celestial Mechanics", Nauka, Moscow, 1979, 200 p. (Russian).

E. Grebenikov, Yu. Ryabov: "Constructive Methods of Nonlinear Analysis", Mir, Moscow, 1983, 360 p.

E. Grebenikov, Ju. Ryabov: "Metoda usrednienia w mechanice nieliniowej", PAN Publishing House, Warsaw, 1983, 630 p.

E. A. Grebenikov: "Averaging Method in Applicative problems", Nauka, Moscow, 1986, 240 p. (Russian).

E. A. Grebenikov, Yu. A. Mitropolskij, Yu. A. Ryabov: "Introduction to
Resonant Analytic Dynamics", Janus-K Publishing House, Moscow, 1999, 321

p. (Russian).

E. A. Grebenikov: "Nicolaus Copernic", Nauka, Moscow, 1973, 160 p. (Russian).

The latter book was translated in ten languages (in Romanian in 1975).

**7. Scientific membership:**

- member of the Mathematical Society of Moscow since 1960;

- member of the IAU since 1968;

- member of the Russian Society of Mechanics since 1974;

- honorary member of the Academy of Republic of Moldova since 1991;

- member of the Academy of Astronautics since 1995

**8. Other information:**

- USSR State Prize in Science (1971);

- USSR Government Prize (1983);

- Krylov Prize in Mathematics of the Ukrainian Academy (1998).

I was the scientific advisor for more than 40 PhD's. My students are working
in many countries (Israel, Moldova, Poland, Russia, Ukraine, USA, etc.

**My name was assigned to an asteroid: 4268 Grebenikov.**