Namesake of the only non-cyclic four-element group, he founded and supervised the "Encyclopedia of Mathematical Knowledge", and is known for his "Erlangen Program", which synthesized geometry.
This mathematician collaborated with Sophus Lie on the discovery of the fundamental properties of asymptotes of the Kummer surface, and with Arnold Sommerfeld wrote a four volume work on the workings of gyroscopes. Namesake of the only non-cyclic four-element group, he founded and supervised the "Encyclopedia of Mathematical Knowledge", and is known for his "Erlangen Program", which synthesized geometry. FTP, who was this German mathematician, namesake of a famous one sided surface known as his bottle?
This mathematician collaborated with Sophus Lie on the discovery of the fundamental properties of asymptotes of the Kummer surface, and with Arnold Sommerfeld wrote a four volume work on the workings of gyroscopes.
(Christian) Felix Klein