Were Pavel Urysohn and Leonid Levin known for the same type of work?
Pavel Urysohn Pavel Samuilovich Urysohn (Па́вел Самуи́лович Урысо́н ) (February 3, 1898 – August 17, 1924) was a Soviet mathematician of Jewish origin who is best known for his contributions in dimension theory, and for developing Urysohn's Metrization Theorem and Urysohn's Lemma, both of which are fundamental results in topology. His name is also commemorated in the terms Urysohn universal space, Fréchet–Urysohn space, Menger–Urysohn dimension and Urysohn integral equation. He and Pavel Alexandrov formulated the modern definition of compactness in 1923.
Aleksandr Solzhenitsyn Aleksandr Isayevich Solzhenitsyn ( ; Russian: Алекса́ндр Иса́евич Солжени́цын , ] ; 11 December 1918 – 3 August 2008) (often Romanized to Alexandr or Alexander) was a Russian novelist, historian, and short story writer. He was an outspoken critic of the Soviet Union and communism and helped to raise global awareness of its Gulag forced labor camp system. He was allowed to publish only one work in the Soviet Union, "One Day in the Life of Ivan Denisovich" (1962), in the periodical "Novy Mir". After this he had to publish in the West, most notably "Cancer Ward" (1968), "August 1914" (1971), and "The Gulag Archipelago" (1973). Solzhenitsyn was awarded the 1970 Nobel Prize in Literature "for the ethical force with which he has pursued the indispensable traditions of Russian literature". Solzhenitsyn was afraid to go to Stockholm to receive his award for fear that he would not be allowed to reenter. He was eventually expelled from the Soviet Union in 1974, but returned to Russia in 1994 after the state's dissolution.