Arthur Moritz Schoenflies

German mathematician- Arthur Moritz Schoenflies (German: ['?ø?nfli?s]; 17 April 1853 – 27 May 1928), sometimes written as Schönflies, was a German mathematician, known for his contributions to the application of group theory to crystallography, and for work in topology. Schoenflies was born in Landsberg an der Warthe (modern Gorzów, Poland).
- He studied under Ernst Kummer and Karl Weierstrass, and was influenced by Felix Klein. The Schoenflies problem is to prove that an ( n - 1 ) {\displaystyle (n-1)} -sphere in Euclidean n-space bounds a topological ball, however embedded.
- This question is much more subtle than it initially appears. He studied at the University of Berlin from 1870–1875.
- He obtained a doctorate in 1877, and in 1878 he was a teacher at a school in Berlin.
- In 1880, he went to Colmar to teach. Schoenflies was a frequent contributor to Klein's encyclopedia: In 1898 he wrote on set theory, in 1902 on kinematics, and on projective geometry in 1910. He was a great-uncle of Walter Benjamin.

Read more at Wikipedia

- Famous People's Birthdays on 17 April, Poland
- Famous People's Birthdays in April, Poland
- Famous People's Birthdays on 17 April, Germany
- Famous People's Birthdays in April, Germany
- Famous mathematician's Birthdays on 17 April, Poland
- Famous mathematician's Birthdays in April, Poland
- Famous university teacher's Birthdays on 17 April, Poland
- Famous university teacher's Birthdays in April, Poland
- Famous high school teacher's Birthdays on 17 April, Poland
- Famous high school teacher's Birthdays in April, Poland
- Famous crystallographer's Birthdays on 17 April, Poland
- Famous crystallographer's Birthdays in April, Poland
- Famous mathematician's Birthdays on 17 April, Germany
- Famous mathematician's Birthdays in April, Germany
- Famous university teacher's Birthdays on 17 April, Germany
- Famous university teacher's Birthdays in April, Germany
- Famous high school teacher's Birthdays on 17 April, Germany
- Famous high school teacher's Birthdays in April, Germany