Who was born first, Georgy Voronoy or Lev Schnirelmann? 
Georgy Voronoy: Georgy Feodosevich Voronoy (Ukrainian: Георгій Феодосійович Вороний ; Russian: Гео́ргий Феодо́сьевич Вороно́й ; 28 April 1868 – 20 November 1908) was a Russian and Ukrainian mathematician.
i don't know