Jakob Steiner (1796–1863) was a self-made Swiss farmer’s son who later became a professor at the University of Berlin. He developed new methods in projective geometry that enabled him to prove many beautiful and often intricate theorems. (M 45237) _ _.
Avastatud: 1-6-2000 Avastamiskoht: Prescott Avastajad: Comba, P. G.