Which mathematician was the father of physicist Nikolai Borisovich Delone: Jakow Trachtenberg or Boris Delaunay?
Boris Delaunay Boris Nikolaevich Delaunay or Delone (Russian: Бори́с Никола́евич Делоне́ ; March 15, 1890 – July 17, 1980) was one of the first Russian mountain climbers and a Soviet/Russian mathematician, and the father of physicist Nikolai Borisovich Delone.
Nikolai Brashman Nikolai Dmitrievich Brashman (Russian: Николáй Дми́триевич Брáшман ; German: "Nikolaus Braschmann" ; June 14, 1796 – 25 May [O.S. 13 May] 1866 ) was a Russian mathematician of Austrian origin. He was a student of Joseph Johann Littrow, and the advisor of Pafnuty Chebyshev and August Davidov.