Evgraf Fedorov, Date of Birth, Place of Birth, Date of Death

    

Evgraf Fedorov

Russian mathematician, crystallographer, and mineralogist

Date of Birth: 10-Dec-1853

Place of Birth: Orenburg, Orenburg Oblast, Russia

Date of Death: 21-May-1919

Profession: professor, mathematician, mineralogist, crystallographer, mining engineer

Zodiac Sign: Sagittarius


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About Evgraf Fedorov

  • Evgraf Stepanovich Fedorov (Russian: ?????´? ?????´????? ???????, 22 December [O.S.
  • 10 December] 1853 – 21 May 1919) was a Russian mathematician, crystallographer and mineralogist.Fedorov was born in the Russian city of Orenburg.
  • His father was a topographical engineer.
  • The family later moved to Saint Petersburg.
  • From the age of fifteen, he was deeply interested in the theory of polytopes, which later became his main research interest.
  • He was a distinguished graduate of the Gorny Institute, which he joined at the age of 26. He contributed to the identification of conditions under which a group of Euclidean motions must have a translational subgroup whose vectors span the Euclidean space.
  • His best-known result is his 1891 derivation of the 230 symmetry space groups which now serve as the mathematical basis of structural analysis.
  • He also proved that there are only 17 possible wallpaper groups which can tile a Euclidean plane.
  • This was then proved independently by George Pólya in 1924.
  • The proof that the list of wallpaper groups was complete only came after the much harder case of space groups had been settled.
  • In 1895, he became a professor of geology at the Moscow Agricultural Institute (now the Timiryazev Academy).
  • Fedorov died from pneumonia in 1919 during the Russian Civil War in Petrograd, RSFSR. He developed the Federov stage for polarizing microscopes, a tool for crystallography which allows a mineral specimen to be studied under precise angles of tilt and rotation, providing an analysis of crystal structure.

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