Who was born first, Aleksandr Danilovich Aleksandrov or Grigori Perelman?
Aleksandr Danilovich Aleksandrov Aleksandr Danilovich Aleksandrov (Russian: Алекса́ндр Дани́лович Алекса́ндров , alternative transliterations: "Alexandr" or "Alexander" (first name), and "Alexandrov" (last name)) (August 4, 1912 – July 27, 1999), was a Soviet/Russian mathematician, physicist, philosopher and mountaineer.
Pyotr Filippov Pyotr Pavlovich Filippov (Russian: Пётр Павлович Филиппов ; born September 21, 1893 in Saint Petersburg; died 9 October 1965 in Leningrad) was a Russian Soviet football player and coach.