Date of Birth: 
About Pafnuty Chebyshev
- Pafnuty Lvovich Chebyshev (Russian: ?????´??? ????´??? ???????, IPA: [p?f'nut??j 'l?vov??t? t??b?'?of]) (16 May [O.S.
- 4 May] 1821 – 8 December [O.S.
- 26 November] 1894) was a Russian mathematician.
- His name can be alternatively transliterated as Chebysheff, Chebychov, Chebyshov; or Tchebychev, Tchebycheff (French transcriptions); or Tschebyschev, Tschebyschef, Tschebyscheff (German transcriptions).
- Chebychev, mixture between English and French transliterations, is sometimes erroneously used.
Read more at Wikipedia