Doctor of Physical and Mathematical Sciences, Professor. Born in Kharkov. In 1949, he graduated from the Department of Physics and Mathematics of Kharkov State University. Worked at the Institute of Physics and Technology (Kharkov) of the Academy of Sciences of the Ukrainian SSR, then at the Institute for Low Temperature Physics and Engineering (Kharkov) of the Academy of Sciences of the Ukrainian SSR. At the same time, he taught at Kharkov University. Since 1993 he has lived in Israel. His main works are on the quantum theory of condensed systems (low-temperature magnets and exactly solvable low-dimensional models).