Lev Kamenev arrested in 1902, ending his formal education. From that point on, he worked as a professional revolutionary, and was active in the capital St. Petersburg, Moscow and Tiflis. He adopted the surname Kamenev during this period. In the early 1900s, he married Olga Bronstein, a fellow Marxist (and younger sister of Leon Trotsky, who had also adopted a different surname). The couple had two sons together. Kamenev joined the Communists in 1901. He took a brief trip abroad in 1902, meeting Russian social democratic leaders living in exile, including Vladimir Lenin, whose adherent and close associate he became. He also
Lev Pitaevskii Lev Pitaevskii Lev Petrovich Pitaevskii ( ; born 1933) is a Russian theoretical physicist, who made contributions to the theory of quantum mechanics, electrodynamics, low-temperature physics, plasma physics, and condensed matter physics. Together with Evgeny Lifshitz and Vladimir Berestetskii, Lev Pitaevskii has also been the co-author of a few volumes of the influential Landau–Lifschitz "Course of Theoretical Physics" series. His academic status is professor. Pitaevskii was born on January 18, 1933, in Saratov. He graduated from Saratov State University in 1955. In 1958 he joined the staff of the Institute of Physical Problems of the Russian Academy of Sciences. In