Pavel Sergeyevich Alexandrov (Russian: Па́вел Серге́евич Алекса́ндров ), sometimes romanized Paul Alexandroff or Aleksandrov (7 May 1896 – 16 November 1982), was a Soviet mathematician. He wrote about three hundred papers, making important contributions to set theory and topology.
Pavel Sergeyevich Alexandrov died when he was more than 70 years old
Yes he was born in 1896 and died in 1982, which is 86 years old