title: Dmitrii Sintsov
text: # Dmitrii Sintsov
  
  Dmitrii Matveevich Sintsov (21 November 1867, in Vyatka – 28 January 1946) was a Russian mathematician known for his work in the theory of conic sections and non-holonomic geometry.
  
  He took a leading role in the development of mathematics at the University of Kharkiv, serving as chairman of the Kharkov Mathematical Society for forty years, from 1906 until his death at the age of 78.
  
  